{
  "cik": 798941,
  "entityName": "FIRST CITIZENS BANCSHARES INC /DE/",
  "facts": {
    "dei": {
      "EntityPublicFloat": {
        "label": "Entity Public Float",
        "description": "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 1051192401,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2011-06-30",
              "val": 1139006602,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2012-06-30",
              "val": 888367135,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2013-06-28",
              "val": 1199498891,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2014-06-30",
              "val": 1206529239,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2015-06-30",
              "val": 1930557160,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2016-06-30",
              "val": 1900169651,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2017-06-30",
              "val": 2736470741,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2018-06-30",
              "val": 3012571741,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2019-06-30",
              "val": 2987147364,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2020-06-30",
              "val": 2346993887,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2021-06-30",
              "val": 4789537671,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2022-06-30",
              "val": 7873632647,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2023-06-30",
              "val": 14258285207,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2024-06-30",
              "val": 17290620797,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2025-06-30",
              "val": 17263599044,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q2I"
            }
          ]
        }
      }
    },
    "us-gaap": {
      "AccretionAmortizationOfDiscountsAndPremiumsInvestments": {
        "label": "Accretion (Amortization) of Discounts and Premiums, Investments",
        "description": "The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -19507000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -31295000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -21550000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 29506000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            }
          ]
        }
      },
      "AccruedFeesAndOtherRevenueReceivable": {
        "label": "Accrued Fees and Other Revenue Receivable",
        "description": "For an unclassified balance sheet, the amount of fees and other revenue, excluding investment income receivable, earned but not yet received, which were recognized in conformity with revenue recognition criteria based on estimates or specific contractual terms.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 66226000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 68845000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 60684000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 60684000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 60684000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 73368000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 77186000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 77186000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 83204000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 83204000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 83204000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 83644000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 83644000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 83644000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 83644000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 83644000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 83644000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 98501000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 98501000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 50876000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 50876000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 43886000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 43886000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 43886000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 42216000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 42216000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 42216000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 42216000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 42216000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 52406000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 52406000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 49743000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 49743000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 51565000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 47666000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 47666000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 47666000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 47666000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 47666000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 47255000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 45567000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 46110000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 48390000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 48390000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 48390000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 48390000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 48390000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 49668000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 49019000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 48511000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 57254000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 57254000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 57254000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 57254000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 57254000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 63165000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 66729000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 67368000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 70036000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 70036000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 70036000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 70036000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 70036000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 73518000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 71916000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 74933000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 79839000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 79839000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 79839000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 79839000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 79839000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 80456000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 86640000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 90821000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 95249000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 95249000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 95249000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 95249000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 95249000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 96607000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 99567000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 105616000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 109903000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 109903000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 109903000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 109903000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 109903000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 113812000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 115303000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 117123000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 123154000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 123154000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 123154000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 123154000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 123154000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 125626000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 175496000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 151737000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 145694000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 145694000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 145694000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 145694000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 145694000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 148022000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 133043000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 132911000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 134237000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": {
        "label": "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment",
        "description": "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 485074000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 496453000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 496453000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 549894000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 549894000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 597596000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 597596000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 660501000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 660501000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 675125000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 675125000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 726778000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 726778000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 800325000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 800325000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 892060000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 892060000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 914971000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 914971000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1010176000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1010176000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1079631000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax": {
        "label": "AOCI, Debt Securities, Available-for-sale, Adjustment, after Tax",
        "description": "Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 25069000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 27483000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2010-06-30",
              "val": 27418000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 25599000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2010Q3I"
            }
          ]
        }
      },
      "AccumulatedOtherComprehensiveIncomeLossBeforeTax1": {
        "label": "AOCI Including Portion Attributable to Noncontrolling Interest, before Tax",
        "description": "Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, including portion attributable to noncontrolling interest. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": -134923000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": -134923000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-09-30",
              "val": -156536000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": -41434000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": -41434000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": -41434000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": -41434000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": -41434000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": -27217000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 6499000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": -3173000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": -86690000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": -86690000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": -86690000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": -86690000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": -86690000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": -57939000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": -83716000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": -57412000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": -104352000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": -104352000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": -104352000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": -104352000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": -104352000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": -38596000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": -24337000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": -24499000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": -214481000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": -214481000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": -214481000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": -214481000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": -214481000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": -175861000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": -162981000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": -146236000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": -193833000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": -193833000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": -193833000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": -193833000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": -193833000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": -299122000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": -317713000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": -321526000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": -305438000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": -305438000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": -305438000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": -305438000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": -305438000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": -268650000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": -234716000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": -223080000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": -164576000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": -164576000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": -164576000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": -164576000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": -164576000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": -33264000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": -12552000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": -17864000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 15926000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 15926000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 15926000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 15926000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 15926000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": -43728000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": -28727000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": -41736000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 12696000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax": {
        "label": "Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax",
        "description": "Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 11002000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": -11002000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "AccumulatedOtherComprehensiveIncomeLossNetOfTax": {
        "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax",
        "description": "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": -54643000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": -53510000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": -24949000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": -24949000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": -24949000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": -24859000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": -22557000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": -22557000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": -24333000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": -24333000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": -24333000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": -36529000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": -36529000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": -36529000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": -36529000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": -36529000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": -36529000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": -39907000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": -39907000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": -29451000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": -29451000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": -32527000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": -32527000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": -32527000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2011-12-31",
              "val": -66574000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": -66416000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": -66416000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-03-31",
              "val": -66416000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": -62407000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": -62407000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-06-30",
              "val": -62407000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": -51986000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2012-09-30",
              "val": -51986000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2012-12-31",
              "val": -82106000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": -79905000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2013-03-31",
              "val": -79905000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2013-03-31",
              "val": -79905000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-03-31",
              "val": -79905000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": -100176000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2013-06-30",
              "val": -100176000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2013-06-30",
              "val": -100176000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-06-30",
              "val": -100176000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": -95545000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2013-09-30",
              "val": -95545000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": -25268000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": -16594000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2014-03-31",
              "val": -16594000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2014-03-31",
              "val": -16594000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-03-31",
              "val": -16594000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 4057000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2014-06-30",
              "val": 4057000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-06-30",
              "val": 4057000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-06-30",
              "val": 4057000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": -1858000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-09-30",
              "val": -1858000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": -52981000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": -35411000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": -35411000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-03-31",
              "val": -35411000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-03-31",
              "val": -35411000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": -51159000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": -51159000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-06-30",
              "val": -51159000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-06-30",
              "val": -51159000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": -34876000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": -34876000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": -64440000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": -23824000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": -23824000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-03-31",
              "val": -23824000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-03-31",
              "val": -23824000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": -15027000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": -15027000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-06-30",
              "val": -15027000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-06-30",
              "val": -15027000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": -14784000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": -14784000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2016-12-31",
              "val": -135192000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": -110941000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": -110941000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-03-31",
              "val": -110941000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-03-31",
              "val": -110941000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": -102843000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": -102843000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-06-30",
              "val": -102843000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-06-30",
              "val": -102843000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": -92324000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-09-30",
              "val": -92324000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": -122294000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": -122294000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": -122294000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": -122294000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": -122294000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": -122294000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2017-12-31",
              "val": -122294000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": -230323000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2018-03-31",
              "val": -230323000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-03-31",
              "val": -230323000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-03-31",
              "val": -230323000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": -244638000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-06-30",
              "val": -244638000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-06-30",
              "val": -244638000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": -247575000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": -235187000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": -235187000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": -235187000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": -235187000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": -235187000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-01-01",
              "val": -172345000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2019-03-31",
              "val": -206860000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2019-03-31",
              "val": -206860000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": -180731000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": -171772000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": -126723000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": -126723000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": -126723000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": -126723000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": -126723000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": -25612000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": -9664000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": -13756000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 12263000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 12263000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 12263000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 12263000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 12263000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": -33671000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": -22120000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": -32137000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 9776000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": -305000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": -465000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": -729000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": -735000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": -735000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": -735000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": -735000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": -735000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": -735000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": -669000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": -772000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": -880000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": -491000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": -491000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": -491000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": -491000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": -491000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": -491000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": -582000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": -610000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": -159000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": -445000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": -445000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": -445000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": -445000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": -445000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": -199000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": -114000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": -44000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 83000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 83000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": -72000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AdditionalPaidInCapital": {
        "label": "Additional Paid in Capital",
        "description": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 143766000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 143766000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 143766000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 143766000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 143766000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 143766000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 143766000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 143766000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 143766000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 143766000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 143766000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 143766000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 143766000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 143766000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 143766000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 143766000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 143766000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 143766000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 143766000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 143766000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 143766000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 143766000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 143766000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 143766000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 143766000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 143766000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 143766000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 143766000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 143766000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 143766000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 143766000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 143766000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 143766000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 143766000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 143766000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 143766000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 143766000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 143766000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 143766000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 143766000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 143766000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 143766000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 143766000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 143766000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 143766000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 143766000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 143766000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 143766000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 143766000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 143766000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 658918000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 658918000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 658918000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 658918000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 658918000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 658918000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 658918000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 658918000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 658918000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 658918000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 658918000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 658918000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 658918000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 658918000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 658918000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 658918000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 658918000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 658918000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 658918000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 658918000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 658918000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 658918000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 658918000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 658918000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 658918000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 658918000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 658918000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 658918000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 658918000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 658918000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 658918000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 600957000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 493962000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 493962000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 493962000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 493962000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 493962000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 393449000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 303880000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 168790000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 44081000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 44081000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 44081000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 44081000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 44081000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 339955000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 5344000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 5345000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 4506000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 4109000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 4109000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 4109000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 4109000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 4109000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 4109000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 4104000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 4106000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 4106000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 4108000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 4108000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 4108000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 4108000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 4108000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 4108000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 4099000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 4099000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 3389000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 2417000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 2417000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 2417000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 2417000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 2417000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 1798000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 1179000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 270000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts": {
        "label": "Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs",
        "description": "Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 619000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "AdvancesFromFederalHomeLoanBanks": {
        "label": "Advances from Federal Home Loan Banks",
        "description": "Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 240300000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 240300000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 240300000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 240300000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 240300000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 240300000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 290300000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 290300000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 520300000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 510300000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 510300000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 510300000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 510300000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 510300000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 585300000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 660200000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 660200000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 660200000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 660200000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 660200000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 660200000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 660200000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 660200000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 835200000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 835200000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 835200000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 835200000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 835200000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 835200000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 835200000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 85200000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 128700000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 264700000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 175200000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 175200000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 175200000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 175200000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 175200000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 563700000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 563700000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 563700000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 655175000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 645663000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 645000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 645000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 639000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1785000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease": {
        "label": "Allowance for Loan and Lease Losses, Period Increase (Decrease)",
        "description": "Amount of increase (decrease) of allowance reserve for credit loss.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -64651000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-03-31",
              "val": 681000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q1"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -88717000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -88717000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -189898000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -189898000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -94011000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "AllowanceForLoanAndLeaseLossesProvisionForLossGross": {
        "label": "Allowance for Loan and Lease Losses, Provision for Loss, Gross (Deprecated 2013-01-31)",
        "description": "Reflects the gross amount charged against earnings during the period as credit losses (bad debt expense) based on review of the loan and lease portfolio and application of the methodology for estimating credit losses.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 79364000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 143519000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 143519000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 232277000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 232277000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 142885000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "AllowanceForLoanAndLeaseLossesWriteOffs": {
        "label": "Allowance for Loan and Lease Losses, Write-offs",
        "description": "Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 69354000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 95316000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 95316000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 196840000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 196840000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 100478000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "AllowanceForLoanAndLeaseLossesWriteoffsNet": {
        "label": "Allowance for Loan and Lease Losses Write-offs, Net",
        "description": "Amount, after recoveries, of loans and leases that have been written-off.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -189898000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -94011000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -94011000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -60737000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -60737000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -60737000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -29568000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -29568000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -29568000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -18914000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -18914000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -18914000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -20362000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -20362000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -22594000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "AmortizationMethodQualifiedAffordableHousingProjectInvestments": {
        "label": "Amortization Method Qualified Affordable Housing Project Investments",
        "description": "Amount of investment in qualified affordable housing projects.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 57100000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 57100000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 57100000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-06-30",
              "val": 76400000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 74500000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 85600000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 85600000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 85600000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 85600000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 85600000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 110000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 107400000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 104800000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 109800000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 109800000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 109810000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 109810000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 109800000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 116700000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 127400000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 124100000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 128000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 128004000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 128000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 128000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 128000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 134400000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 150500000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 151500000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 147300000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 147300000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 167800000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 167800000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 163900000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 163900000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 156600000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 156000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 156000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 156000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 157000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 533000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 538000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 558000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 598000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 598000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 598000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 598000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1660000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1810000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1810000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            }
          ]
        }
      },
      "AmortizationOfIntangibleAssets": {
        "label": "Amortization of Intangible Assets",
        "description": "The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 2048000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 869000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 1324000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 1940000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 1578000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 3164000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 3164000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 4727000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 4727000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 4727000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 6203000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 6203000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1169000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 2200000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 3337000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 3337000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 4386000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 4386000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3476000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3476000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3476000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2309000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2309000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2309000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 637000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1207000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1737000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 6955000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 6955000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 6955000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5206000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5206000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 8302000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 8302000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 11765000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 11765000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 22894000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 22894000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 22894000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 5586000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 5586000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 11135000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 11135000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 16633000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 16633000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 21808000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 21808000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 21808000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5271000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5271000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 11045000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 11045000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 16994000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 16994000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22842000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22842000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22842000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 6049000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 6049000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11562000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11562000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 17580000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 17580000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23648000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23648000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23648000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 5943000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 5943000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 12019000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 12019000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 17934000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 17934000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 23861000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 23861000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 23861000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 6160000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 6160000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 12464000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 12464000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 18589000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 18589000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 32801000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 32801000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 15000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 5795000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 11220000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 16408000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 9000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 25582000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 12000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 12000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 12000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 6000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 6000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 12000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 12000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 17000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 17000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 23000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 23000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 23000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 23000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 5000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 5000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 23000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 23000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 18000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 18000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 40000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 40000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 17000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 17000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 57000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 57000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 57000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 57000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 17000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 17000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 32000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 32000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 15000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 15000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 47000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 47000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 63000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 63000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 15000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 15000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 28000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 13000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 41000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 13000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 54000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 13000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "AmortizationOfMortgageServicingRightsMSRs": {
        "label": "Amortization of Mortgage Servicing Rights (MSRs)",
        "description": "The periodic amortization (in proportion to and over the period of estimated net servicing income or loss) of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2600000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 205000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 205000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -164000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -164000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 164000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 919000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 919000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 919000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -852000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 852000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -1962000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1962000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -1110000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1110000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 2657000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 2657000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 695000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 695000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4002000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4002000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4002000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1268000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1268000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 2601000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 2601000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1333000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1333000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 3978000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 3978000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1377000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1377000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4958000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4958000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4958000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1350000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1350000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2720000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2720000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1370000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1370000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4137000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4137000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1417000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1417000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 5648000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 5648000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 5648000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1486000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1486000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2918000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 1432000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4338000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4338000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1420000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1420000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5807000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5807000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5807000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1447000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1447000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1567000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 3014000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 1567000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 4595000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 4595000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1581000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1581000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6233000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6233000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6233000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1823000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1823000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3942000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3942000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2119000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2119000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 6150000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 6150000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2208000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2208000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8400000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8400000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2248000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4325000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2077000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6505000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 2180000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 8727000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "AmountAvailableForDividendDistributionWithoutPriorApprovalFromRegulatoryAgency": {
        "label": "Amount Available for Dividend Distribution without Prior Approval from Regulatory Agency (Deprecated 2013-01-31)",
        "description": "The amount of dividends that may be paid or declared in any calendar year without prior approval of regulatory agencies.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 1382080000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "AmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLossBeforeTax": {
        "label": "Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax",
        "description": "Amount recognized in net periodic benefit cost (credit) and other comprehensive (income) loss.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10480000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 22603000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 22603000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7486000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7486000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7486000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -72236000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -72236000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -131095000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "AssetManagementFees": {
        "label": "Asset Management Fees (Deprecated 2013-01-31)",
        "description": "Revenue recognized in the period for (1) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (2) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (3) other investment management and advisory fees.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 48198000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 22253000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 11481000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 34324000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 12071000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 46071000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 46071000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 11734000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 25956000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 25956000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 14222000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 14222000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 38782000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 38782000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 38782000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 12826000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 12826000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 12826000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 51378000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 51378000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 51378000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 13288000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 13288000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 27407000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 27407000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 14119000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 14119000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 41418000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 41418000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 41418000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 14011000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 14011000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 14011000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 54974000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 54974000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 13755000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 13755000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 28285000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 28285000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 14530000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 14530000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 42414000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 14129000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 57236000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 14515000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 29612000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 15097000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            }
          ]
        }
      },
      "AssetManagementFees1": {
        "label": "Asset Management Fees (Deprecated 2018-01-31)",
        "description": "Amount of fixed fee revenue for the management of an investment fund portfolio. Excludes investment advisory, distribution and servicing, and performance fees.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 54974000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 42414000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 14129000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 57236000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 57236000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 14515000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 29612000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 15097000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 44724000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 44724000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 15112000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 15112000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 59628000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 59628000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 59628000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 14880000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 14880000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 30695000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 30695000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 15815000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 15815000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 46352000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 46352000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 15657000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 15657000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 66115000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 66115000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 66115000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 20880000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 20880000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 42435000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 42435000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 21555000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 21555000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 64658000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 64658000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 22223000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 22223000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 82865000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 82865000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 82865000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 19634000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 19634000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 40925000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 40925000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 21291000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 21291000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 60840000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 60840000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 19915000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 19915000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 80221000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 80221000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 20962000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 20962000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 42882000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 21920000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 64116000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 21234000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 86719000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 23569000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "Assets": {
        "label": "Assets",
        "description": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 17317880000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 18512878000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 18466063000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 18466063000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 18466063000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 21215691000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 21105769000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 21105769000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 21049291000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 21049291000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 21049291000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 21167495000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 21167495000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 21021650000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 21021650000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 21015344000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 21015344000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 21015344000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 20881493000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 20881493000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 20881493000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 20881493000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 20997298000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 21143628000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 21225661000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 21240990000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 21332638000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 21173620000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 21351012000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 21308822000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 21511352000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 21199091000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 21199091000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 21199091000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 21199091000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 21193878000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 22154997000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 22062840000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 21942491000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 30853649000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 30896855000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 31449824000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 32195657000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 32230403000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 32971910000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 34018405000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 34769850000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 34584154000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 34436437000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 35088566000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 34954659000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 35961670000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 37655094000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 37748324000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 41594453000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 47866194000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 48666873000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 53908606000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 55175318000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 56901977000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 58308140000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 108597000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 107673000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 109310000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 214658000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 209502000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 213765000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 217836000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 219827000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 220567000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 228822000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 229653000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 233488000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 229698000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 229698000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 235959000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": {
        "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax",
        "description": "Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 28188000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 20589000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 20589000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 6367000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 6367000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 15324000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 32094000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 6425000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 6425000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 25341000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 25341000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 25341000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 25341000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 25341000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 144053000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 157071000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 143740000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 111189000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 111189000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 111189000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 111189000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 111189000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 81458000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 71822000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 59737000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 45006000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 45000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 45000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 45000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 45000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 11000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 115000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 115000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 115000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 115000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 115000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 115000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 51000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 37000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 337000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 220000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 272000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 317000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 341000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 341000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 199000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": {
        "label": "Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax",
        "description": "Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 80928000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 56432000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 56432000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 11483000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 10187000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 8500000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 44888000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 26484000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 33751000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 56798000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 57000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 57000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 57000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 57000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 442000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 653000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 995000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 897000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1029000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1175000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 927000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 943000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 649000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 660000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 593000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 541000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 503000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 503000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 548000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleDebtSecuritiesAmortizedCostBasis": {
        "label": "Debt Securities, Available-for-sale, Amortized Cost",
        "description": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 7229014000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 4607117000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 4607117000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 7052152000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 7052152000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 7052152000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 7052152000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 7052152000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 7656464000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 8472398000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 8884548000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 6911965000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 6911965000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 6911965000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 6911965000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 6911965000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 7270552000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 7335745000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 7345143000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 9215219000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 9215000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 9215000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9726000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 9857000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax": {
        "label": "Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax",
        "description": "Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 19010000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 23304000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 23304000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 23304000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 23304000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 23304000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 4266000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 6297000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 3353000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 8654000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 8654000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 22872000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            }
          ]
        }
      },
      "AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax": {
        "label": "Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax",
        "description": "Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in equity securities classified as available-for-sale.",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 220000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 233000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 233000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 233000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 233000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 233000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 32926000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 8303000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 10687000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 1811000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1811000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 283000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecurities": {
        "label": "Available-for-sale Securities",
        "description": "Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 3745385000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 3283521000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 2929162000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 2929162000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 2929162000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 3375158000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 3768777000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 3768777000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 3786841000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 3786841000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 3786841000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 4202016000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 4202016000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 4014241000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 4014241000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 3994825000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 3994825000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 3994825000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 4457739000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 4457739000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 4634248000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 4634248000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 5012041000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 5226228000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 5226228000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 5226228000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 5226228000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 5226228000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 5279678000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 5184976000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 5161585000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 5387703000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 5387703000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 5387703000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 5387703000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 5387703000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 5676237000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 5538166000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 5648094000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 7171917000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 7171917000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 7171917000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 7171917000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 7171917000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 7045109000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 7350194000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 6690578000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 6861293000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 6861293000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 6861293000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 6861293000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 6861293000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 6687289000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 6557580000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 6384815000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 7006580000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 7006580000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 7006580000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 7006580000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 7006580000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 7119861000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 6596450000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 6992877000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 7180180000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 7180180000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 7180180000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 7180180000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 6857740000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 4783507000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 4677351000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 4557110000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 4557110000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 4557110000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 4589800000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 4366041000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 4904883000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 7059674000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 7059674000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 7059674000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 7789034000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 8619282000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 9019788000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 7014243000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 7014243000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 7307122000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 7381083000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax": {
        "label": "Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax",
        "description": "Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 28188000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-09-30",
              "val": 38685000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 20589000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 20589000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 20589000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 39354000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 22163000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 33845000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 6367000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 6367000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 6367000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 42666000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 54774000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 52085000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 15324000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 15324000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 15324000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 15324000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 25790000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 29404000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 35288000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 32094000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 32094000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 32094000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 32094000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 1412000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 2267000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 1502000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 6425000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 6425000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 6425000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 9387000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 12360000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 15594000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax": {
        "label": "Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax",
        "description": "Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 44820000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 44820000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-09-30",
              "val": 23311000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 12246000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 12246000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 12246000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 12246000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 12246000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 5722000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 17904000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 6919000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 30871000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 30871000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 30871000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 30871000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 30871000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 3766000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 4226000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 3467000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 88031000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 88031000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 88031000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 88031000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 88031000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 62377000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 55571000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 47040000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 80928000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 80928000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 80928000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 80928000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 158872000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 76938000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 89983000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 56432000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 56432000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 56432000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 31323000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 9044000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 9482000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 11483000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 10187000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 8500000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 44888000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 26484000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesAmortizedCost": {
        "label": "Available-for-sale Securities, Amortized Cost Basis",
        "description": "This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 3724779000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 3745815000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 3745815000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 4486881000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 4486881000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 4486881000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 4486881000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 4188164000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 3982402000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 3982402000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 3965995000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 3965995000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 3965995000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 4029858000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 4029858000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 4029858000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 4029858000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 4029858000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 4434072000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 4434072000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 4606093000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 4606093000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 4969135000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 5192419000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 5192419000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 5192419000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 5192419000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 5192419000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 5247345000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 5191635000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 5164774000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 5404335000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 5404335000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 5404335000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 5404335000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 5404335000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 5680970000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 5511349000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 5632720000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 7163574000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 7163574000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 7163574000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 7163574000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 7163574000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 7011477000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 7345935000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 6663652000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 6885797000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 6885797000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 6885797000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 6885797000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 6885797000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 6648389000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 6507032000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 6336197000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 7079287000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 7079287000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 7079287000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 7079287000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 7079287000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 7156448000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 6622617000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 7004629000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 7229014000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 7229014000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 7229014000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 7229014000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 7015200000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 4858178000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 4765832000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 4607117000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 4607117000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 4607117000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 4611736000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 4362725000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 4898771000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 7052152000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 7052152000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 7052152000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 7656464000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 8472398000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 8884548000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 6911965000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 6911965000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 7270552000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 7335745000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss",
        "description": "Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 1105000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-09-30",
              "val": 19288000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 10043000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 10043000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 10043000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 10043000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 4024000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 4783000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 3895000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 6094000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 6094000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 6094000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 6094000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 6094000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 2335000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 1039000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 2172000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 4689000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 4689000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 4689000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 4689000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 4689000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 4569000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 4491000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 5396000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 59470000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 59470000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 59470000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 59470000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 96056000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 21136000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 60586000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 52489000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 52489000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 52489000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 29217000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 8509000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 3641000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 1794000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 1794000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 1794000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 3233000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 1056000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 2499000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 2445000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 2445000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 3481000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 943000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss (Deprecated 2018-01-31)",
        "description": "Amount of unrealized loss on securities classified as available-for-sale that have been in a loss position for twelve months or longer.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 25000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 50000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss (Deprecated 2018-01-31)",
        "description": "Amount of unrealized loss on securities classified as available-for-sale.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 129000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1642000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value",
        "description": "This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 10747000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 1997908000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 2173173000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 650895000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 650895000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 1078507000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 1078507000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 1078507000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 1548880000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1548880000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1548880000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 2753260000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 2753260000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1641082000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 1641082000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 390679000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 673676000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 673676000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 673676000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 673676000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 673676000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 934341000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 3246947000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 2854627000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 3161530000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 3161530000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 3161530000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 3161530000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 3161530000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 3137674000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 2217101000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 2868711000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 2005694000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 2005694000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 2005694000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 2005694000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 2005694000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 962985000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 2259081000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 1212137000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 5620397000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 5620397000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 5620397000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 5620397000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 5620397000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 723809000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 608611000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 681145000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 5620242000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 5620242000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 5620242000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 5620242000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 5620242000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 5763159000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 6067261000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 6022252000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 6728273000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 6728273000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 6728273000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 6728273000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 6518061000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 4197225000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 4362677000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 3502153000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 3502153000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 3502153000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 2969077000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 1845648000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 2367937000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 3110967000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 3110967000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 3110967000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 1232212000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 950210000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 853903000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 1111994000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 1111994000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 3824361000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 2943346000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss",
        "description": "Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 43715000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 43715000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-09-30",
              "val": 4023000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 2203000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 2203000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 2203000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 2203000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 2203000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 1698000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 13121000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 3024000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 24777000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 24777000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 24777000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 24777000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 24777000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 1431000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 3187000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 1295000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 83342000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 83342000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 83342000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 83342000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 83342000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 57808000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 51080000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 41644000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 21458000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 21458000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 21458000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 21458000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 62816000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 55802000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 29397000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 3943000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 3943000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 3943000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 2106000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 535000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 5841000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 16025000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 16025000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 16025000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 8250000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 9131000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 6001000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 6466000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 6466000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 41407000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 25541000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss (Deprecated 2018-01-31)",
        "description": "Amount of unrealized loss on investments in available-for-sale securities that have been in a loss position for less than twelve months.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 104000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1592000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value",
        "description": "This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 9156000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 1997365000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 2172701000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 648869000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 648869000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 1076407000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 1076407000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 1076407000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 1547490000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1547490000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1547490000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 2752137000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 2752137000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1639404000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 1639404000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 384897000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 664243000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 664243000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 664243000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 664243000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 664243000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 924252000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 3215181000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 2826678000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 3104700000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 3104700000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 3104700000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 3104700000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 3104700000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 3114052000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 1107272000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 1778244000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 1173274000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1173274000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 1173274000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 1173274000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 1173274000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 645300000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 1962911000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 911980000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 5340271000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 5340271000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 5340271000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 5340271000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 5340271000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 432788000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 411279000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 391984000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 5257891000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 5257891000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 5257891000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 5257891000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 5257891000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 5401671000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 5727435000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 5615772000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 3752642000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 3752642000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 3752642000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 3752642000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 3880315000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 3535984000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 2846381000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 705526000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 705526000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 705526000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 390651000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 180067000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 1817847000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 2778014000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 2778014000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 2778014000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 985269000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 732783000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 487273000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 760153000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 760153000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 3370304000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 2802433000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value",
        "description": "This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 1591000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 543000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 472000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 2026000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 2026000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 2100000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 2100000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 2100000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 1390000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1390000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1390000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 1123000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 1123000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1678000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 1678000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 5782000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 9433000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 9433000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 9433000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 9433000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 9433000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 10089000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 31766000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 27949000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 56830000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 56830000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 56830000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 56830000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 56830000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 23622000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 1109829000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 1090467000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 832420000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 832420000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 832420000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 832420000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 832420000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 317685000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 296170000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 300157000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 280126000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 280126000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 280126000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 280126000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 280126000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 291021000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 197332000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 289161000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 362351000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 362351000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 362351000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 362351000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 362351000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 361488000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 339826000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 406480000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 2975631000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 2975631000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 2975631000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 2975631000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 2637746000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 661241000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 1516296000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 2796627000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 2796627000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 2796627000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 2578426000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 1665581000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 550090000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 332953000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 332953000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 332953000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 246943000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 217427000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 366630000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 351841000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 351841000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 454057000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 140913000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10",
        "description": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 1912000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 1683000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 99834000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 523000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 523000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 523000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 523000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 515000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 515000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 503000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 483000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 483000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 483000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 483000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 483000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 483000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 463000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 510000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 419000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 408000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 408000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 408000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 408000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 408000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 408000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 405000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 382000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 373000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 353000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 153000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 78000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 23000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 23000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 16000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10",
        "description": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 1946000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 1710000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 100387000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 548000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 548000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 548000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 548000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 520000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 506000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 481000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 455000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 455000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 455000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 455000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 455000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 455000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 427000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 457000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 374000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 369000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 369000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 369000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 369000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 369000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 369000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 372000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 351000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 352000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 330000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 330000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 330000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 330000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 330000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 338000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 145000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 74000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 14000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five",
        "description": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 1220914000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 916101000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 549912000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 2049000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 2049000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 2049000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 2049000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 2055000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 2054000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2063000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2068000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 2068000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 2068000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 2068000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 2068000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 2068000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 2120000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1910000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 4036000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 4996000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 4996000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 4996000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 4996000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 4996000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 4996000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 5940000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 5962000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 5880000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 8945000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 8945000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 8945000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 8945000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 8945000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 7727000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 6043000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 4631000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 5853000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 5853000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 6162000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five",
        "description": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 1232535000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 921536000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 551647000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 2048000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 2048000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 2048000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 2048000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1972000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1951000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1914000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1928000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1928000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1928000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1928000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1928000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1928000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 2004000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1787000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 3937000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 4959000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 4959000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 4959000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 4959000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 4959000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 4959000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 5898000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 5921000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 5925000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 8949000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 8949000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 8949000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 8949000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 8949000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 7764000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 6071000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 4662000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 5879000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 5879000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 6150000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10",
        "description": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 158584000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 126857000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 198456000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 17000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 16000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 16000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 154000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 26000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 19000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 22000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 22000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 22000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 17000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 17000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 12000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10",
        "description": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 164434000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 130781000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 203596000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 16000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 16000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 15000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 14000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 148000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 22000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 16000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 18000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 21000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 21000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 22000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 17000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 17000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 12000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost": {
        "label": "Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One",
        "description": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 2342011000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 3441185000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 3133236000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 48000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 34000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 2987000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 4829000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 5674000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 5674000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 5674000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 5674000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 5674000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 5674000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 6086000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 5995000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 6014000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 5090000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 5090000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 5090000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 5090000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 5090000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 5503000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 6293000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 9276000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 4893000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 4893000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 6393000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue": {
        "label": "Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One",
        "description": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 2351171000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 3436818000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 3140002000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 48000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 33000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 2975000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 4802000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 5658000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 5658000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 5658000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 5658000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 5658000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 5658000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 6049000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 5961000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 6013000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 5086000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 5086000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 5086000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 5086000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 5086000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 5508000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 6307000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 9295000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 4914000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 4914000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 6406000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtSecurities": {
        "label": "Debt Securities, Available-for-sale",
        "description": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 7180180000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 4557110000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 4557110000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 7059674000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 7059674000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 7059674000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 7059674000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 7059674000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 7789034000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 8619282000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 9019788000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 7014243000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 7014243000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 7014243000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 7014243000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 7014243000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 7307122000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 7381083000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 7371129000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 9203427000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtSecuritiesCurrent": {
        "label": "Debt Securities, Available-for-sale, Current",
        "description": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 2893393000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 4486881000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010Q4I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesFairValueDisclosure": {
        "label": "Available-for-sale Securities, Fair Value Disclosure (Deprecated 2013-01-31)",
        "description": "This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.",
        "units": {
          "USD": [
            {
              "end": "2010-09-30",
              "val": 3786841000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-09-30",
              "val": 3786841000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 4510076000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-03-31",
              "val": 4202016000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 4014241000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 3994825000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 3994825000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 3994825000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 4056423000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 4457739000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-03-31",
              "val": 4457739000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-06-30",
              "val": 4634248000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-06-30",
              "val": 4634248000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-09-30",
              "val": 5012041000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 5226228000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 5226228000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 5226228000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-03-31",
              "val": 5279678000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 5184976000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossRealizedGainLossNet": {
        "label": "Available-for-sale Securities, Gross Realized Gain (Loss)",
        "description": "This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -511000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 945000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": -186000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1885000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1885000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 940000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 940000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1952000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1952000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-30",
              "end": "2011-03-31",
              "val": -96000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -449000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -545000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -545000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": -96000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -291000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -291000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -291000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 254000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 254000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 254000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -288000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -288000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -288000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -45000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 45000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -42000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -42000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 3000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 3000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -11000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -11000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 31000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 31000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2277000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2277000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2277000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 58000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29096000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29096000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29096000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5126000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5126000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5273000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5273000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 147000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 147000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10837000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10837000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5564000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5564000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4628000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4628000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 17157000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 17157000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12529000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12529000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17509000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17509000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 352000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 352000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -24000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3327000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 3351000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4664000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1337000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6855000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1136000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 19795000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 33547000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 13752000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 54972000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 21425000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9207000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 25037000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15830000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossRealizedGains": {
        "label": "Available-for-sale Securities, Gross Realized Gains",
        "description": "This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 104000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 2860000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 3803000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 3803000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1167000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1167000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4103000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4103000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-30",
              "end": "2011-03-31",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 156000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 156000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 156000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 531000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 531000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 531000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 375000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 375000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 375000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 531000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 531000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 531000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 5000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 5000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 5000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 5000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 36000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 36000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 31000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 31000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2324000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2324000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2324000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 58000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29129000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29129000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29129000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5135000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5135000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5286000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5286000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 151000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 151000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10850000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10850000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5564000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5564000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10834000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10834000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10834000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4933000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4933000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 17488000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 17488000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12555000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12555000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17940000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17940000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 452000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 452000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 27104000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 27104000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3356000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3356000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 3353000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 3353000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4693000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4693000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1337000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1337000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 11635000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 7045000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1326000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 20474000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 34226000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 13752000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 55651000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 21425000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9207000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 25051000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15844000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossRealizedLosses": {
        "label": "Available-for-sale Securities, Gross Realized Losses",
        "description": "This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 1729000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1506000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1506000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1730000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1730000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-30",
              "end": "2011-03-31",
              "val": 96000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 605000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 701000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 701000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 96000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 796000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 796000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 796000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 95000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 95000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 95000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 793000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 793000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 793000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 2000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 2000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 33000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 33000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 33000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 9000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 9000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 13000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 13000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 13000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 13000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 17000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 17000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 17000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 305000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 305000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 331000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 331000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 26000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 26000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 431000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 431000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 100000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 100000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 431000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 431000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 27000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 27000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 29000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 29000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 29000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 29000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7342000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 190000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 190000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 679000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 679000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 679000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 14000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 14000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossUnrealizedGains": {
        "label": "Available-for-sale Securities, Gross Unrealized Gain",
        "description": "Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 44127000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 34618000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 33481000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossUnrealizedLoss": {
        "label": "Available-for-sale Securities, Gross Unrealized Loss",
        "description": "Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 129000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 11423000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1642000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossUnrealizedLosses1": {
        "label": "Available-for-sale Securities, Gross Unrealized Losses (Deprecated 2013-01-31)",
        "description": "This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2010-09-30",
              "val": 110000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-09-30",
              "val": 110000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 11423000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 11423000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 11423000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-03-31",
              "val": 18164000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 1642000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 2633000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 2633000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 2633000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1889000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1889000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1889000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 1889000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 1889000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 5537000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-03-31",
              "val": 5537000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-06-30",
              "val": 1566000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-06-30",
              "val": 1566000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-09-30",
              "val": 441000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 708000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 708000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 708000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-03-31",
              "val": 1804000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 33421000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (Deprecated 2012-01-31)",
        "description": "This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for those securities which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 20000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 29000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 50000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 50000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 50000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 50000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 43000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 43000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 35000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 37000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 49000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            }
          ]
        }
      },
      "AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (Deprecated 2013-01-31)",
        "description": "Amount of the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for securities which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 43000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 35000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 37000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-12-31",
              "val": 127000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 127000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 127000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-03-31",
              "val": 133000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 851000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses1": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses (Deprecated 2012-01-31)",
        "description": "This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 11423000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 18164000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 1642000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 2633000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 2633000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 2633000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1889000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1889000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 5537000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1566000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 441000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            }
          ]
        }
      },
      "AvailableforsaleSecuritiesContinuousUnrealizedLossPositionAggregateLosses2": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses (Deprecated 2013-01-31)",
        "description": "Amount of the excess of amortized cost basis over fair value of securities in a loss position and categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 1889000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 5537000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1566000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-12-31",
              "val": 708000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 708000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 708000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-03-31",
              "val": 1804000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 33421000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (Deprecated 2012-01-31)",
        "description": "This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for those securities which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 11403000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 18135000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 1592000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 2583000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 2583000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 2583000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1846000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1846000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 5502000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1529000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 392000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            }
          ]
        }
      },
      "AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (Deprecated 2013-01-31)",
        "description": "Amount of the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for securities categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 1846000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 5502000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1529000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-12-31",
              "val": 581000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 581000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 581000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-03-31",
              "val": 1671000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 32570000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "AvailableforsaleSecuritiesGrossUnrealizedGain": {
        "label": "Available-for-sale Securities, Gross Unrealized Gains (Deprecated 2013-01-31)",
        "description": "This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2010-09-30",
              "val": 41136000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-09-30",
              "val": 41136000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 34618000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 34618000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 34618000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-03-31",
              "val": 32016000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 33481000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 31463000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 31463000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 31463000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 28454000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 28454000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 28454000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 28454000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 28454000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 29204000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-03-31",
              "val": 29204000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-06-30",
              "val": 29721000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-06-30",
              "val": 29721000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-09-30",
              "val": 43347000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 34517000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 34517000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 34517000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-03-31",
              "val": 34137000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 26762000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear": {
        "label": "Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year",
        "description": "Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.",
        "units": {
          "investments": [
            {
              "end": "2014-09-30",
              "val": 107,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2015-03-31",
              "val": 38,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 38,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 40,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 39,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 52,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 36,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 40,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 51,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 52,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 52,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 55,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            }
          ]
        }
      },
      "AverageBalanceDuringPeriodOfLoansHeldInPortfolio": {
        "label": "Average Balance During Period of Loans Held-in-portfolio (Deprecated 2014-01-31)",
        "description": "This is the result of the average balance during the period of total loans managed or securitized less securitized loans and loans that are in the process of being securitized.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 51306000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 51306000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 51306000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 118978000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 118635000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 119034000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 119034000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 123805000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 123805000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 39000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "BusinessCombinationAcquisitionRelatedCosts": {
        "label": "Business Combination, Acquisition Related Costs",
        "description": "This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 791000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 391000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 391000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2453000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5903000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 3450000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 7352000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 7352000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 1505000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 1505000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13064000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13064000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13064000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 2997000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 2997000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 7570000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 7570000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4573000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4573000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 11249000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 11249000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 3679000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 3679000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14174000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14174000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14174000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 38000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 38000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1423000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1423000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1385000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1385000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5187000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5187000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 3764000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 3764000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5341000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5341000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5341000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 833000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 833000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 7686000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 7686000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 6853000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 6853000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 8248000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 8248000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 562000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 562000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 9015000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 9015000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 9015000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 598000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 598000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 3010000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 3010000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 2412000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 2412000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4136000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4136000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1126000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1126000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6462000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6462000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6462000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1719000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1719000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5803000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5803000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 4084000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 4084000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 9695000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 9695000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 3892000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 3892000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 17166000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 17166000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 17166000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4232000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4232000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 8601000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 8601000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4369000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4369000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 12108000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 12108000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 3507000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 3507000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 17450000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 17450000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 6819000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 7000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 12588000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 13000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5769000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 19601000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 20000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 7013000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 29463000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 29000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 29000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 29000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 135000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 135000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 169000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 169000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 34000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 34000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 202000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 202000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 33000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 33000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 231000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 231000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 231000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 231000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 28000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 28000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 233000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 233000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 205000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 205000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 354000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 354000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 121000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 121000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 470000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 470000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 470000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 470000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 58000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 58000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 102000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 102000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 44000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 44000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 148000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 148000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 46000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 46000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 210000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 210000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 42000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 42000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 80000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 38000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 108000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 28000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 141000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 5000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "BusinessCombinationBargainPurchaseGainRecognizedAmount": {
        "label": "Business Combination, Bargain Purchase, Gain Recognized, Amount",
        "description": "In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 150417000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 37555000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 42930000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 42930000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 42930000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 42930000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 42930000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 42930000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 42930000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 42930000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1704000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1704000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 4994000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 4994000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 3290000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 3290000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5831000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5831000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 837000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 837000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5831000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5831000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5831000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 12017000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 12017000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 134745000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 134745000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 122728000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 122728000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 134745000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 134745000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 134745000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 134745000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 134745000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 50000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 3592000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 3592000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 100000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 100000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 32000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 431000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 431000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 431000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 431000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 431000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 431000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 431000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 431000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 431000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 431000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9824000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9824000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 9879000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 9879000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 55000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 55000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 9891000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 9891000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 12000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 12000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9808000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9808000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9808000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9808000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "BusinessCombinationConsiderationTransferred1": {
        "label": "Business Combination, Consideration Transferred",
        "description": "Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.",
        "units": {
          "USD": [
            {
              "end": "2016-05-19",
              "val": 35000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2017-12-18",
              "val": 113600000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 112657000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 112657000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            }
          ]
        }
      },
      "BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual": {
        "label": "Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual",
        "description": "This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 11800000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 6800000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3"
            }
          ]
        }
      },
      "CapitalRequiredForCapitalAdequacyToRiskWeightedAssets": {
        "label": "Banking Regulation, Total Risk-Based Capital Ratio, Capital Adequacy, Minimum",
        "description": "Ratio of minimum total risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.",
        "units": {
          "pure": [
            {
              "end": "2011-12-31",
              "val": 0.08,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0.08,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 0.08,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 0.08,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 0.08,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0.08,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 0.08,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0.08,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0.08,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0.08,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0.08,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.08,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.08,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.08,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.08,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.08,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.08,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.08,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.08,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.08,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.08,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.08,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "CashAcquiredFromAcquisition": {
        "label": "Cash Acquired from Acquisition",
        "description": "The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 0,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 0,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 51381000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 51381000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 51381000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 106489000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 106489000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 106489000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 106489000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 106489000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 106489000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 106489000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 106489000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 106489000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 962977000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 961862000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 974043000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 974043000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1148907000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1148907000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1150879000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1150879000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1150879000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1150879000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 182370000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 182370000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 123137000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 134000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 134000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 134000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 134000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 134000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1347000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 879000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 879000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 810000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 810000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 810000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 810000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 810000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 810000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "CashAndCashEquivalentsAtCarryingValue": {
        "label": "Cash and Cash Equivalents, at Carrying Value",
        "description": "Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.",
        "units": {
          "USD": [
            {
              "end": "2007-12-31",
              "val": 793788000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2007Q4I"
            },
            {
              "end": "2008-12-31",
              "val": 593375000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2008-12-31",
              "val": 593375000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2008-12-31",
              "val": 593375000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2008-12-31",
              "val": 593375000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-06-30",
              "val": 637896000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 723031000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 745180000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 625857000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 625857000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 493786000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 493786000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 493786000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 406252000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 406252000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 537717000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 537717000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 539337000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 539337000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 539337000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 552663000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 552213000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 571004000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 571004000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 606107000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2012-09-30",
              "val": 606107000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 460217000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2013-03-31",
              "val": 460217000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 542645000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2013-06-30",
              "val": 542645000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 569118000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2013-09-30",
              "val": 569118000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 543471000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2014-03-31",
              "val": 543471000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 566952000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2014-06-30",
              "val": 566952000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 400993000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-09-30",
              "val": 400993000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 495901000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 495901000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 514404000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 514404000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 546444000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 546444000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 457758000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 457758000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 507569000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 507569000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 495705000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 495705000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 502273000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 502273000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 556772000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 556772000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 296386000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-09-30",
              "val": 296386000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 248139000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2018-03-31",
              "val": 248139000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 260525000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-06-30",
              "val": 260525000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 262525000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-09-30",
              "val": 262525000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 268599000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 284147000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 288933000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 4270000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 9030000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "CashAndCashEquivalentsPeriodIncreaseDecrease": {
        "label": "Cash and Cash Equivalents, Period Increase (Decrease)",
        "description": "Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -200413000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 44521000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 129656000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -113133000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -113133000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 264938000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 145615000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 145615000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 13544000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 13544000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 13544000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -20064000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -20064000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -20064000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -53926000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -53926000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 77539000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 77539000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 79159000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 79159000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 79159000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 130623000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 130623000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 130623000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -38138000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -38588000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -19797000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -19797000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 15306000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 15306000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 48929000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 48929000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 48929000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -179513000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -179513000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -97085000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -97085000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -70612000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -70612000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -106131000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -106131000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -106131000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 9872000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 9872000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 33353000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 33353000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -132606000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -132606000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 70583000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 70583000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 70583000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -108281000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -108281000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -89778000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -89778000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -57738000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -57738000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -70096000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -70096000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -70096000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -76328000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -76328000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -26517000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -26517000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -38381000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -38381000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5655000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5655000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5655000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -37468000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -37468000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 17031000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 17031000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -243355000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -243355000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -203591000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -203591000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -203591000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -88011000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -88011000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -75625000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -75625000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -73625000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -73625000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -8710000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -8710000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -58841000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -43293000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -38507000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 49279000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "CashAndDueFromBanks": {
        "label": "Cash and Due from Banks",
        "description": "For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 637896000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 723031000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 480242000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 745180000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 625857000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 625857000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 493786000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 493786000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 493786000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 460178000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 406252000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 406252000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 537717000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 537717000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 539337000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 539337000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 539337000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 590801000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 552663000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 552663000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 571004000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 571004000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 606107000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 639730000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 460217000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 542645000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 569118000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 533599000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 543471000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 566952000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 400993000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 604182000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 495901000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 514404000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 546444000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 534086000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 457758000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 507569000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 495705000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 539741000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 502273000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 556772000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 296386000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 248139000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 260525000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 262525000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 268599000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 284147000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 288933000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 454220000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 389233000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 352419000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 410495000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 395364000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 337450000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 337814000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 523000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 583000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 481000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1598000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 917000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 791000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 698000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 764000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 862000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 812000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 889000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 874000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 801000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 801000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1080000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": {
        "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents",
        "description": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 336150000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2018-12-31",
              "val": 327440000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 268599000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 284147000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 288933000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2019-12-31",
              "val": 376719000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2019-12-31",
              "val": 377000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 454220000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2020-03-31",
              "val": 454220000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 389233000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-06-30",
              "val": 389233000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 352419000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-09-30",
              "val": 352419000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 362048000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2020-12-31",
              "val": 362000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2020-12-31",
              "val": 362000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2020-12-31",
              "val": 362000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2020-12-31",
              "val": 362000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 362000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2020-12-31",
              "val": 362000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 410495000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2021-03-31",
              "val": 410000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 395364000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-06-30",
              "val": 395000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 337450000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2021-09-30",
              "val": 338000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 337814000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2021-12-31",
              "val": 338000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 523000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 523000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 583000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-06-30",
              "val": 583000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 481000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2022-09-30",
              "val": 481000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1598000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2023-03-31",
              "val": 1598000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 917000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-06-30",
              "val": 917000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 791000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-09-30",
              "val": 791000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 908000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 698000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2024-03-31",
              "val": 698000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 764000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2024-06-30",
              "val": 764000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 862000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2024-09-30",
              "val": 862000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2024-12-31",
              "val": 814000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 812000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2025-03-31",
              "val": 812000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 889000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 874000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 801000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 801000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1080000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": {
        "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect",
        "description": "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -8710000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -58841000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -43293000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -38507000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 49279000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 49279000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 77501000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 77501000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 12514000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 12514000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -24300000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -24300000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -14671000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -14671000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -15000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 48447000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 48000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 33316000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 33000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -24598000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -24000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -24234000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -24000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -24000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -24000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 185000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 185000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 245000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 245000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 143000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 143000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 180000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 180000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 180000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 180000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1080000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1080000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 398000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 398000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 273000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 273000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 390000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 390000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 390000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 390000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -210000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -210000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -144000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -144000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -46000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -46000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -94000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -94000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 75000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 60000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -13000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 279000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield",
        "description": "The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 490245000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 456491000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 413816000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 418160000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 422286000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 422286000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 379101000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 379101000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 341939000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 341939000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2015-12-31",
              "val": 343856000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 342957000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 342957000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 362937000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 362937000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 351506000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 351506000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2016-12-31",
              "val": 335074000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 341474000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 341474000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 350319000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 350319000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 341698000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-09-30",
              "val": 341698000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2017-12-31",
              "val": 316679000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 309345000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2018-03-31",
              "val": 309345000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 344520000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-06-30",
              "val": 344520000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 323202000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-09-30",
              "val": 323202000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 312894000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 312894000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 312894000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 312894000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 312894000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 286192000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 280036000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 260179000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 251135000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion",
        "description": "Current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 224672000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 30200000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 60660000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 89775000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 112368000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 112368000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 25067000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 25067000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 59182000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 59182000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 91642000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 91642000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 114580000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 114580000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 21398000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 21398000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 41821000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 41821000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 59066000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 59066000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 76565000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 76565000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 76565000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 19351000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 19351000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 39798000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 39798000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 59039000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 59039000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 76594000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 76594000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 76594000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 17973000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 17973000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 32188000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 32188000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 14200000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 45699000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 45699000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 13500000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 61502000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 61502000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 17755000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 29648000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 11900000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 45891000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 16200000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 57687000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAdditions": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Additions",
        "description": "Increases in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan due to the acquisition of similar loans accounted for as debt securities during the period. This relates to loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 84295000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 84295000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 84295000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 111973000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 111973000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 55186000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 55186000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 53192000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 53192000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 53192000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 53192000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 53192000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 53192000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 6176000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 6176000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 12279000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 12279000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 12488000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 12488000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 12488000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 12488000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 12488000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 16653000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 16653000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 44120000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 44120000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 44120000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 44120000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 44120000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 44120000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 44120000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 4142000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4142000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6393000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6393000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 17403000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference",
        "description": "Change in the estimate of cash flows expected to be collected, after acquisition of a loan, which results in an increase in accretable yield (for example, if actual cash flows are significantly greater than previously expected). This relates to loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 92349000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 6048000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 9992000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1374000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 7865000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 7865000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1294000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1294000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 12322000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 12322000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 15687000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 15687000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 25357000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 25357000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 9905000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 9905000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 18384000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 18384000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 25595000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 25595000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 29931000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 29931000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 29931000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 11277000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 11277000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 12328000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 12328000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 16947000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 16947000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 18901000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 18901000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 18901000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -929000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -929000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 6899000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 6899000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 5866000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 5866000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5980000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5980000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 600000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 3695000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6156000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6489000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value",
        "description": "Fair value at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-01-01",
              "val": 316327000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-01-01",
              "val": 316327000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-01-01",
              "val": 316327000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 623408000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 623408000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-02-13",
              "val": 149294000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-02-13",
              "val": 154496000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-02-13",
              "val": 154496000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-02-13",
              "val": 154496000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-02-13",
              "val": 154496000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-02-13",
              "val": 154496000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-02-13",
              "val": 154496000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 154496000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 154496000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-11",
              "val": 35416000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-11",
              "val": 80084000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-03-11",
              "val": 80690000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-03-11",
              "val": 35416000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-03-11",
              "val": 80084000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-03-11",
              "val": 80690000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-03-11",
              "val": 85149000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2016-03-11",
              "val": 199682000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2016-03-11",
              "val": 199682000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2016-03-11",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2016-03-11",
              "val": 15555000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2016-03-11",
              "val": 15555000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 80084000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 80690000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 80690000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 80690000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 80690000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-01-13",
              "val": 85149000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-01-13",
              "val": 199682000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-01-13",
              "val": 199682000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-01-13",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-01-13",
              "val": 15555000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-01-13",
              "val": 15555000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-01-13",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2017-01-13",
              "val": 29430000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2017-01-13",
              "val": 29430000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2017-03-31",
              "val": 85149000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-12-31",
              "val": 199682000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 199682000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 199682000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 30190000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 30190000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 106937000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition",
        "description": "Amount of cash flows expected to be collected at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 735381000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 735381000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-02-13",
              "val": 204480000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-02-13",
              "val": 207688000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-02-13",
              "val": 207688000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-12-31",
              "val": 207688000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 207688000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-11",
              "val": 41592000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 92363000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 93178000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 93178000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 101802000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodContractuallyRequiredPaymentsReceivableAtAcquisition": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition",
        "description": "Amount of contractually required payments receivable at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 828156000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 828156000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-02-13",
              "val": 251800000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-02-13",
              "val": 247812000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-02-13",
              "val": 247812000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-12-31",
              "val": 247812000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 247812000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-11",
              "val": 51098000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 108578000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 108649000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 108649000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 111250000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesCarryingAmountNet": {
        "label": "Certain Loans Acquired in Transfer Accounted for as Debt Securities, Carrying Amount, Net",
        "description": "The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and other-than-temporary impairments), for loans accounted for as debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 1809235000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1029426000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 1029426000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 1029426000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 1029426000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 1029426000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 1270818000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 1109933000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 996280000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 1186498000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 1247343000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 1252545000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 1123239000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 1123239000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 1044064000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 1044064000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2015-12-31",
              "val": 950516000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 945887000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 945887000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 921467000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 921467000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 868200000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 868200000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2016-12-31",
              "val": 809169000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 848816000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 848816000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 894863000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 894863000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 834167000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-09-30",
              "val": 834167000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2017-12-31",
              "val": 762998000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 703837000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2018-03-31",
              "val": 703837000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 674269000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-06-30",
              "val": 674269000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 638018000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-09-30",
              "val": 638018000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 606576000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 606576000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 606576000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 606576000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 606576000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 557356000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 551447000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 513589000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 558716000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 558716000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 558716000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 558716000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 558716000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 560352000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 530651000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 495878000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 462882000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 462882000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 462882000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 462882000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 462882000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 432773000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 396506000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 373255000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 337624000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield": {
        "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield",
        "description": "Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2009-12-31",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2009-12-31",
              "val": 14481000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-06-30",
              "val": 35078000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 119636000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 119636000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 164586000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 164586000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 164586000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 164586000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2010-12-31",
              "val": 164586000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 164586000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 164586000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 164586000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 211642000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 155709000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 155709000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 180091000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 180091000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 180091000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2011-12-31",
              "val": 276690000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 284944000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 284944000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 337807000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 337807000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 582126000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2012-09-30",
              "val": 582126000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2012-12-31",
              "val": 539564000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 485935000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2013-03-31",
              "val": 485935000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 522206000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2013-06-30",
              "val": 522206000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 467072000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2013-09-30",
              "val": 467072000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 439990000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 490245000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 456491000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 413816000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion": {
        "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion",
        "description": "Amount of accretion recognized for the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities, with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -12170000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 100299000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 100299000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 181363000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 51694000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 122755000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -122755000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 192556000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 192556000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 192556000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 319429000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 64896000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 64896000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 125791000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 125791000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 193438000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 193438000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 304023000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 79886000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 79886000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 131909000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 131909000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 179792000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 179792000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 224672000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 30200000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 60660000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 89775000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions": {
        "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Additions",
        "description": "Amount of additions to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 45523000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 63908000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 63908000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 109766000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 57998000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 53426000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 53426000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 79526000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 79526000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 79526000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 106520000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 106520000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 84295000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 84295000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 84295000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans": {
        "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Disposals of Loans",
        "description": "Amount of reduction, resulting from a sale or transfer of a loan, in the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -1070000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1070000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1070000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1070000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 319429000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 304023000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 485000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 4634000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference": {
        "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference",
        "description": "Amount of increase of reclassification from nonaccretable difference to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 2795000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 157097000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 157097000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 222772000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 40752000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 60452000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 60452000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 128535000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 128535000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 128535000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 325013000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 325013000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 73150000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 73150000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 186908000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 186908000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 292773000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 498874000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 353708000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 353708000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 26742000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -11653000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 119185000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 72149000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 107300000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 61689000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 92349000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 6048000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 9992000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1374000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue": {
        "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value",
        "description": "Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "end": "2014-10-01",
              "val": 4175586000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-10-01",
              "val": 4175586000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2016-09-01",
              "val": 241392000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-01",
              "val": 241392000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q3I"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition": {
        "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition",
        "description": "Amount of cash flows expected to be collected at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "end": "2014-10-01",
              "val": 59187000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-10-01",
              "val": 59187000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2016-09-01",
              "val": 2678000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-01",
              "val": 2678000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q3I"
            }
          ]
        }
      },
      "CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodContractuallyRequiredPaymentsReceivableAtAcquisition": {
        "label": "Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition",
        "description": "Amount of contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.",
        "units": {
          "USD": [
            {
              "end": "2014-10-01",
              "val": 4708681000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-10-01",
              "val": 4708681000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2016-09-01",
              "val": 296529000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-01",
              "val": 296529000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q3I"
            }
          ]
        }
      },
      "CommonStockDividendsPerShareCashPaid": {
        "label": "Common Stock, Dividends, Per Share, Cash Paid",
        "description": "Aggregate dividends paid during the period for each share of common stock outstanding.",
        "units": {
          "USD/shares": [
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 0.6,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 0.9,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 0.6,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 0.9,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            }
          ]
        }
      },
      "CommonStockDividendsPerShareDeclared": {
        "label": "Common Stock, Dividends, Per Share, Declared",
        "description": "Aggregate dividends declared during the period for each share of common stock outstanding.",
        "units": {
          "USD/shares": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1.2,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 0.3,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 0.6,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0.9,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1.2,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1.2,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0.3,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0.3,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0.6,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0.6,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0.9,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 0.9,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1.2,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1.2,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1.2,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 0.3,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 0.3,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0.6,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 0.6,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0.9,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0.6,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1.2,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1.2,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1.2,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0.3,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0.3,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0.3,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0.9,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1.2,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1.2,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1.2,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 0.3,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 0.6,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 0.9,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 0.9,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1.2,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1.2,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1.2,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0.3,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0.3,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0.6,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0.6,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0.9,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0.9,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1.2,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1.2,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1.2,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0.3,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0.3,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0.6,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0.6,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0.9,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0.9,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1.25,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1.25,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1.25,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0.35,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0.35,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0.7,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0.7,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0.35,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1.05,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1.05,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0.35,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1.45,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1.45,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1.45,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0.4,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0.4,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0.8,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0.8,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 0.4,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 0.4,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1.2,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1.2,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 0.4,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 0.4,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1.6,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1.6,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1.6,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0.4,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0.4,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 0.8,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 0.8,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 0.4,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 0.4,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1.2,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1.2,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 0.4,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 0.4,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1.67,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1.67,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1.67,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0.47,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0.47,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0.94,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0.47,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0.47,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0.47,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1.41,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0.47,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0.47,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0.47,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1.88,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1.88,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1.88,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1.88,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0.47,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0.47,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0.47,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0.47,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0.47,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0.47,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0.47,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0.47,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0.47,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0.47,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2.16,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2.16,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2.16,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2.16,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0.75,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0.75,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0.75,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1.5,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0.75,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0.75,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0.75,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2.25,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0.75,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0.75,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3.89,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3.89,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3.89,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3.89,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1.64,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1.64,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3.28,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3.28,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1.64,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1.64,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4.92,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4.92,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1.64,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1.64,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6.87,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6.87,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1.95,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1.95,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 3.9,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 1.95,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 5.85,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 1.95,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 7.95,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2.1,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ComprehensiveIncomeNetOfTax": {
        "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent",
        "description": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 128262000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 181464000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 181464000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 58382000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 90138000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 31756000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 168483000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 78345000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 164983000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 164983000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 164983000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 35653000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 35653000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 77245000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 77245000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 41592000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 41592000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 127190000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 127190000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 49945000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 49945000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 118816000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 118816000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 116863000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 57786000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 57786000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 81421000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 81421000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 23635000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 23635000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 127034000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 127034000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 45613000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 45613000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 224537000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 223707000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 223707000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 31040000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 31153000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 78241000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 78490000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 47201000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 47337000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 98689000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 99076000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 20448000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 20586000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 110849000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 110849000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 110849000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 81386000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 84728000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 113502000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 113502000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 28774000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 28774000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 185743000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 185743000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 72241000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 72241000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 198927000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 198927000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 198927000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 92688000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 92688000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 170801000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 170801000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 78113000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 78113000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 222448000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 222448000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 51647000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 51647000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 154730000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 154730000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 154730000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 91872000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 91872000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 234630000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 234630000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 142758000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 142758000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 312213000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 312213000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 77583000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 77583000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 336650000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 336650000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 336650000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 42254000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 42253000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 121230000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 121229000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 78976000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 78976000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 235611000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 235610000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 114381000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 114381000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 337471000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 337471000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 337471000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 139686000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 139686000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 285174000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 285174000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 145488000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 145488000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 418912000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 418912000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 133738000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 133738000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 565835000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 565835000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 565835000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 158280000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 158280000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 328014000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 328014000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 169734000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 169734000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 466606000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 466606000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 138592000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 138592000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 630709000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 630709000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 631000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 101382000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 101000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 265721000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 266000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 164339000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 165000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 379777000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 380000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 114056000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 114000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 544972000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 545000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 545000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 545000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -44000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -44000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 51000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 51000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 95000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 95000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 102000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 102000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 51000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 51000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 353000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 353000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 353000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 353000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9584000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9584000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10163000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10163000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 579000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 579000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 10807000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 10807000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 644000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 644000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11710000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11710000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11710000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11710000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 640000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 640000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1319000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1319000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 679000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 679000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2409000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2409000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1090000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1090000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2823000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2823000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 729000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 729000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1389000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 660000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2027000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 638000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2734000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 379000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest": {
        "label": "Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest",
        "description": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 128262000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 181464000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 58382000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 90138000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 168483000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 164983000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 35653000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 77245000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 127190000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            }
          ]
        }
      },
      "ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets": {
        "label": "Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset",
        "description": "Amount of contractually specified servicing fee, late fee, and ancillary fee recognized as income for servicing asset and servicing liability.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 600000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 300000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 300000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1300000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 600000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 600000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1100000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1300000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 6100000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2700000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4200000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1400000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 8900000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 3600000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 2800000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 900000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5400000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5400000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5400000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1400000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1400000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 2900000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 2900000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1500000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1500000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 4300000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 4300000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1500000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1500000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5800000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5800000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5800000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1700000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1700000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3600000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3600000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1900000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1900000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 5200000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 5200000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1700000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1700000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7100000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7100000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7100000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1900000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1900000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 3800000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 3800000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 1900000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 1900000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 5600000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 5600000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1900000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1900000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 7500000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 7500000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 7500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1900000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1900000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 3900000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 3900000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 5800000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 5800000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1900000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1900000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7900000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7900000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7900000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2100000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2100000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 4300000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 4300000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2100000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2100000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 6400000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 6400000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2100000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2100000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8500000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2100000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4200000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2100000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6400000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 2100000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 8600000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "CumulativeEffectOfInitialAdoptionOfNewAccountingPrinciple": {
        "label": "Cumulative Effect of Initial Adoption of New Accounting Principle (Deprecated 2011-01-31)",
        "description": "Cumulative effect of initial adoption of new accounting principle on beginning retained earnings, net of tax. This element can be used, generally, for the adjustment to retained earnings of a new accounting principle.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 4904000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 4904000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 4904000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 4904000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 4904000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            }
          ]
        }
      },
      "CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption": {
        "label": "Cumulative Effect of New Accounting Principle in Period of Adoption (Deprecated 2020-01-31)",
        "description": "Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.",
        "units": {
          "USD": [
            {
              "end": "2018-01-01",
              "val": -50051000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-01-01",
              "val": -50051000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2019-01-01",
              "val": -50051000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "CumulativeEffectOfProspectiveApplicationOfNewAccountingPrinciple": {
        "label": "Cumulative Effect of Prospective Application of New Accounting Principle (Deprecated 2015-01-31)",
        "description": "Amount after tax of increase (decrease) to equity or (increase) decrease to net assets as a result of a cumulative effect adjustment for prospective application of a new accounting principle.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -2430000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            }
          ]
        }
      },
      "CurrentFederalTaxExpenseBenefit": {
        "label": "Current Federal Tax Expense (Benefit)",
        "description": "Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 25668000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 127025000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 127025000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 108639000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 108639000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 108639000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 85875000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 85875000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 89939000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 41996000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 46848000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 46848000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 84430000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 84430000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 84430000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 105367000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 105367000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 105367000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 84946000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 84946000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 84946000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 87992000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 87992000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 87992000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 95151000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 95151000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 95151000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 68984000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 68984000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 68984000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 137162000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 137162000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 137000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 140405000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 140000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 140000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 140000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 400000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 400000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 400000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 400000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 649000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 649000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 585000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "CurrentIncomeTaxExpenseBenefit": {
        "label": "Current Income Tax Expense (Benefit)",
        "description": "Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 48546000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 5987000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 2369000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 56885000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 50898000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 30996000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 66768000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 66494000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 80452000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 81774000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 15280000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 15280000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 97213000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 97213000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 97213000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 15439000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 15439000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 15439000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 151893000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 151893000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 110518000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 37951000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 37360000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 48625000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 49216000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 11265000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 11265000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 99161000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 99161000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 98830000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 50536000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 50536000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 50205000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 131740000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 131740000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 131740000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 18354000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 18354000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 29035000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 29035000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 10681000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 10681000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 49009000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 49009000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 19974000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 19974000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 95087000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 95087000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 99151000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 31061000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 31061000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 56353000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 56353000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 25292000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 25292000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 82012000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 82012000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 25659000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 25659000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 49076000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 53928000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 53928000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 10619000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 11639000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 23428000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 25519000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 12809000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 13880000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 37330000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 40492000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 13902000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 14973000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 98371000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 98371000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 98371000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 37675000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 39802000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 64970000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 64970000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 25168000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 25168000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 97854000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 97854000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 32884000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 32884000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 121478000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 121478000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 121478000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 29416000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 29416000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 69674000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 69674000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 40258000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 40258000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 97220000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 97220000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 27546000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 27546000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 92439000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 92439000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 92439000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 37438000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 37438000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 114657000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 114657000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 77219000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 77219000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 151242000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 151242000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 36585000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 36585000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 94108000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 94108000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 94108000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 31222000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 31222000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 60646000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 60646000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 29424000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 29424000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 76844000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 76844000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 16198000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 16198000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 116674000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 116674000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 116674000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 33369000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 69638000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 36269000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 105023000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 35385000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 80079000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 80079000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 80079000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 151694000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 151694000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 161788000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "CurrentStateAndLocalTaxExpenseBenefit": {
        "label": "Current State and Local Tax Expense (Benefit)",
        "description": "Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 5328000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 24868000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 24868000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 23101000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 23101000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 23101000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9212000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9212000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9212000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 7080000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 7080000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 7080000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13941000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13941000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13941000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 16111000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 16111000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 16111000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 7493000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 7493000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 7493000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 6116000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 6116000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 6116000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 21523000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 21523000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 21523000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11095000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11095000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11095000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14532000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14532000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 15000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 21383000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 21000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 21000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 21000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 4000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 372000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 372000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 372000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 372000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 157000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 157000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 286000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "DebtAndEquitySecuritiesGainLoss": {
        "label": "Debt and Equity Securities, Gain (Loss)",
        "description": "Amount of unrealized and realized gain (loss) on investment in debt and equity securities.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3327000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 3351000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4664000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1337000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            }
          ]
        }
      },
      "DebtCurrent": {
        "label": "Debt, Current",
        "description": "Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 568505000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 568505000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-09-30",
              "val": 604435000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 511418000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 511418000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 511418000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 511418000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 511418000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 617794000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 788540000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 798169000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 987184000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 987184000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 987184000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 987184000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 987184000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 941850000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 723225000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 759757000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 594733000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 594733000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 594733000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 594733000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 594733000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 689236000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 728562000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 730214000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 603487000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 603487000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 603487000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 603487000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 603487000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 795587000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 784517000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 679280000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 693807000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 693807000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 693807000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 693807000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 693807000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 554758000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 613993000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 687749000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 572287000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleAllowanceForCreditLoss": {
        "label": "Debt Securities, Available-for-sale, Allowance for Credit Loss",
        "description": "Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger": {
        "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer",
        "description": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 2975631000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 2796627000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 2796627000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 332953000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 332953000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 351841000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 351841000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 351841000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 131437000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 191286000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 191000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 191000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 191000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 191000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1229000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1145000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 3370000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 5347000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 5347000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 5347000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 5347000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 5347000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 5347000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 7062000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 7076000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 7766000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 7865000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 7865000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 7865000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 7865000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 7865000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 7865000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 7767000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 7447000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 7041000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 6413000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 6413000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 6413000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 6413000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 6413000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 5881000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 5439000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 5220000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 4587000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 4587000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 4294000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss": {
        "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss",
        "description": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 59470000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 52489000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 52489000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 1794000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 1794000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 2445000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 2445000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 2445000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 694000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 2132000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 74000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 103000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 529000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 697000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 697000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 697000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 697000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 697000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 697000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 831000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 954000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1126000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 854000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 854000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 854000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 854000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 854000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 854000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 879000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 870000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 647000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 762000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 762000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 762000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 762000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 762000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 646000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 586000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 539000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 500000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 500000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 506000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions": {
        "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions",
        "description": "Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset.",
        "units": {
          "investment": [
            {
              "end": "2018-09-30",
              "val": 185,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 221,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 230,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 200,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 108,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 91,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 53,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 47,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 38,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 39,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 60,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 39,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 36,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 37,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ],
          "security": [
            {
              "end": "2022-09-30",
              "val": 124,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 151,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 337,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 389,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 482,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 483,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 483,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 504,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 524,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 495,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 486,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 476,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 458,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 461,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 307,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 300,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months": {
        "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months",
        "description": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 3752642000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 705526000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 705526000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 2778014000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 2778014000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 760153000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 760153000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 760153000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 3241180000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 6725062000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 6724000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 6724000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 6724000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 6724000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 7130000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 7246000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 5579000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 3501000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 3501000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 3501000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 3501000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 3501000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 3501000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1687000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 4735000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 8240000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 1517000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1517000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 1517000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 1517000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1517000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 1517000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 8131000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 13976000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 659000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 12460000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 12460000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 12460000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 12460000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 12460000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 2871000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 2206000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 1001000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1722000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 1722000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 7696000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss": {
        "label": "Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss",
        "description": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 21458000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 3943000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 3943000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 16025000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 16025000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 6466000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 6466000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 6466000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 33057000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 54666000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 54000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 54000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 54000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 54000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 368000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 550000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 466000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 276000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 276000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 276000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 276000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 276000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 276000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 66000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 75000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 49000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 48000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 73000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 81000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 14000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 7000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 42000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleRealizedGain": {
        "label": "Debt Securities, Available-for-sale, Realized Gain",
        "description": "Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 27104000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 11635000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 11635000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 353000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 353000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 353000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 7000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1300000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 8993000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 8993000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 8993000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 20500000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 34200000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 13800000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 55651000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 21425000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60932000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60932000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 61000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 25000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 16000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 33133000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 33000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8082000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33133000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 5000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleRealizedGainLoss": {
        "label": "Debt Securities, Available-for-sale, Realized Gain (Loss)",
        "description": "Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5700000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6855000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6855000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1136000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1136000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 19795000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 19795000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 33547000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 33547000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 13752000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 13752000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 54972000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 54972000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 21425000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 21425000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60253000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60253000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9207000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 25037000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 25000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15830000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 16000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 33119000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 33000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8082000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33119000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -14000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -14000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -14000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -14000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -26000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -26000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -12000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -12000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -26000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -26000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -26000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -26000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleRealizedLoss": {
        "label": "Debt Securities, Available-for-sale, Realized Loss",
        "description": "Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 431000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7342000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7342000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 190000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 190000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1878000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1878000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1878000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -679000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 679000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 679000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 679000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 679000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 14000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -14000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 14000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 14000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 14000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 26000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 26000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 12000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 12000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleUnrealizedLossPosition": {
        "label": "Debt Securities, Available-for-sale, Unrealized Loss Position",
        "description": "Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 6728273000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 3502153000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 3502153000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 3110967000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 3110967000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1111994000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1111994000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 1111994000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 3372617000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 6916348000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 6915000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 6915000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 6915000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 6915000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 8359000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 8391000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 8949000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 8848000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 8848000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 8848000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 8848000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 8848000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 8848000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 8749000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 11811000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 16006000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 9382000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 9382000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 9382000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 9382000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 9382000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 9382000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 15898000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 21423000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 7700000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 18873000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 18873000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 18873000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 18873000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 18873000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 8752000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 7645000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 6221000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 6309000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 6309000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 11990000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss": {
        "label": "Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss",
        "description": "Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 80928000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 56432000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 56432000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 17819000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 8911000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 33751000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 56798000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 57000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 57000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 57000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 57000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 442000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 653000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 995000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 973000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 897000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1029000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1175000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 867000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 927000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 943000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 649000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 843000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 660000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 593000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 541000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 503000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 503000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 548000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesGainLoss": {
        "label": "Debt Securities, Gain (Loss)",
        "description": "Amount of unrealized and realized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity), investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and investment in debt security measured at fair value with change in fair value recognized in net income (trading).",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6855000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6855000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 19795000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 19795000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 33547000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 33547000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 54972000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60253000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60253000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9207000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 25037000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33119000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DebtSecuritiesHeldToMaturityAllowanceForCreditLoss": {
        "label": "Debt Securities, Held-to-maturity, Allowance for Credit Loss",
        "description": "Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity).",
        "units": {
          "USD": [
            {
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "DebtSecuritiesHeldToMaturityNonaccrual": {
        "label": "Debt Securities, Held-to-maturity, Nonaccrual",
        "description": "Amount of investment in debt security measured at amortized cost (held-to-maturity) on nonaccrual status.",
        "units": {
          "USD": [
            {
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesHeldToMaturityPastDue": {
        "label": "Debt Securities, Held-to-maturity, Past Due",
        "description": "Amount of investment in debt security measured at amortized cost (held-to-maturity), past due.",
        "units": {
          "USD": [
            {
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "DeferredCompensationCashbasedArrangementsLiabilityCurrentAndNoncurrent": {
        "label": "Deferred Compensation Cash-based Arrangements, Liability, Current and Noncurrent",
        "description": "Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements. Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date.",
        "units": {
          "USD": [
            {
              "end": "2015-12-31",
              "val": 24500000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 28400000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 28400000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 33400000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 33400000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 46400000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 46400000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 57000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 57000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 68200000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 68200000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 84000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DeferredFederalIncomeTaxExpenseBenefit": {
        "label": "Deferred Federal Income Tax Expense (Benefit)",
        "description": "Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 30356000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -33333000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -33333000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -12127000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -12127000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -12127000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -27344000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -27344000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -26501000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 38974000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 38731000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 38731000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -30658000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -30658000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -30658000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2758000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2758000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2758000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23144000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23144000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23144000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 115392000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 115392000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 115392000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -10944000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -10944000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -10944000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 50522000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 50522000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 50522000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -28535000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -28535000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -29000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -6234000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -6000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -6000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -6000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 170000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 170000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 170000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 170000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 46000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 46000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 46000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 46000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 68000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 68000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -38000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "DeferredFinanceCostsNet": {
        "label": "Debt Issuance Costs, Net",
        "description": "Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 3459000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 3459000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 2629000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            }
          ]
        }
      },
      "DeferredIncomeTaxExpenseBenefit": {
        "label": "Deferred Income Tax Expense (Benefit)",
        "description": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -8381000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 8589000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 30148000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 35772000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 35772000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -16448000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -35427000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -34105000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -82228000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -82228000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -82228000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -41375000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -41375000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -41375000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1155000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1155000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -17133000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -17133000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -36243000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -36243000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -36243000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -16637000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -16637000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -16637000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -5692000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -5692000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -6845000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -6845000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 5999000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 5999000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -35265000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -35265000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -34422000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 7733000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 7733000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 2360000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 2360000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -18000000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -18000000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 47889000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 47646000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 47646000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -4512000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -4960000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -2744000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -3640000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -23030000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -24374000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -33339000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -33339000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -33339000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -10203000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -10203000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -23762000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -23762000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -3941000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -3941000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 550000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 550000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 550000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -8806000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -8806000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -8501000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -8501000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -13328000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -13328000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 33146000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 33146000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 33146000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 6693000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 6693000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 45628000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 45628000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 67270000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 67270000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 125838000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 125838000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 125838000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -5573000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -5573000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -2835000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -2835000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 13642000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 13642000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -13377000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -13377000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -13377000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -7316000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -7316000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5126000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5126000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 43939000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 43939000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 54598000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 54598000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 54598000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -11485000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -11485000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 17774000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 17774000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 16227000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 16227000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -25535000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -25535000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -26000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 8555000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 13441000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 13000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 9266000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 9000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -7586000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -8000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -8000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -8000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -61000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -61000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 14000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 14000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 80000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 80000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 206000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 206000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 206000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 206000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -69000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -69000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -404000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -404000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 110000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 110000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -165000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -165000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -165000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -165000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -183000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -183000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -127000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -127000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -40000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -40000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -74000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -104000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -111000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 8000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DeferredIncomeTaxesAndTaxCredits": {
        "label": "Deferred Income Taxes and Tax Credits",
        "description": "Amount of deferred income tax expense (benefit) and income tax credits.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 35772000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -41375000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -41375000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -16637000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -16786000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -35265000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "DeferredIncomeTaxLiabilities": {
        "label": "Deferred Tax Liabilities, Gross",
        "description": "Amount of deferred tax liability attributable to taxable temporary differences.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 126776000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 156949000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 156949000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 141666000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 142000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1605000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1605000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1605000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 4976000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 4976000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 4976000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 4770000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 4770000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 4490000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredStateAndLocalIncomeTaxExpenseBenefit": {
        "label": "Deferred State and Local Income Tax Expense (Benefit)",
        "description": "Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 5416000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -8042000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -8042000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -4510000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -4510000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -4510000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 6449000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -7921000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -7921000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -7921000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 8915000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 8915000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 8915000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -2681000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -2681000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -2681000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 3308000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 3308000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 3308000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 10002000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 10002000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 10002000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10446000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10446000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10446000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -2433000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -2433000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -2433000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4076000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4076000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4076000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -1352000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 23000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 23000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 23000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 23000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -222000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -222000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -222000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -222000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -71000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -71000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -79000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "DeferredTaxAssetsGross": {
        "label": "Deferred Tax Assets, Gross",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 116836000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 162949000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 164138000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 205452000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 205452000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 130613000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 171610000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 238320000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 232580000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 225579000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 225579000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 232626000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 232626000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 89325000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 89325000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 134739000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 134739000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 131934000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 131934000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 114921000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 114921000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 108819000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 109000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1389000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1389000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1389000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1425000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1425000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1425000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1315000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1315000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1006000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsHedgingTransactions": {
        "label": "Deferred Tax Assets, Hedging Transactions",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from hedging transactions.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 3748000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 4231000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 4231000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 4106000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 4106000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 2786000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 2786000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 1673000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1673000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 537000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 537000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsLiabilitiesNet": {
        "label": "Deferred Tax Assets, Net",
        "description": "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 36379000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 72453000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 73399000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 118651000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 118651000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 33880000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 130588000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 166128000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 150111000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 158484000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 158484000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 172616000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 172616000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 38976000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 38976000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 82148000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 82148000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 5158000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 5158000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsNet": {
        "label": "Deferred Tax Assets, Net of Valuation Allowance",
        "description": "Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 116751000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 164065000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 162865000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 205452000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsOperatingLossCarryforwards": {
        "label": "Deferred Tax Assets, Operating Loss Carryforwards",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.",
        "units": {
          "USD": [
            {
              "end": "2016-12-31",
              "val": 14300000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 12800000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 28600000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 48300000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 41700000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 34700000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 8000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 358000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 358000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 358000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 118000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 118000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 118000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 76000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 76000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 67000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsOperatingLossCarryforwardsDomestic": {
        "label": "Deferred Tax Assets, Operating Loss Carryforwards, Domestic",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.",
        "units": {
          "USD": [
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 5019000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 5019000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 2685000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 2685000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 6862000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 6862000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 11085000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 11085000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 9545000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 9545000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 7843000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal": {
        "label": "Deferred Tax Assets, Operating Loss Carryforwards, State and Local",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 2544000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 2426000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1350000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 652000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 652000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 79000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 36000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 29000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 29000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 21000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 21000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 15400000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 24600000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 19500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 15900000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsOther": {
        "label": "Deferred Tax Assets, Other",
        "description": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 13273000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 15771000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 17638000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 19465000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 19465000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 17884000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 10569000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 25746000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 26788000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 29279000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 29279000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 26663000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 26663000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 10116000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 5924000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 9555000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 9555000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 10698000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 10698000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 6898000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 6898000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 5845000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 48000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 48000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 48000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 42000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 42000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 63000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 59000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 112000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 104000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsPropertyPlantAndEquipment": {
        "label": "Deferred Tax Assets, Property, Plant and Equipment",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 5550000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 3495000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 13195000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 13195000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 133000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 133000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 3645000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation": {
        "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 4192000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 11145000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 11145000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 13313000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 13313000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 16083000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 16083000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 18860000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 152000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 152000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 152000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 128000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 128000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 129000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions": {
        "label": "Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 46178000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 2593000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 2593000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 15391000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 17147000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 7206000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 7206000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 15679000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 15679000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 704000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 704000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses": {
        "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Provision for Loan Losses",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the provision for loan losses.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 79537000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 78878000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 78878000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 80939000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 80939000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 50853000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 50853000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 53391000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 53391000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 53073000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 53073000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 52293000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 52293000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 39759000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 252000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 252000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 252000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 542000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 542000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 542000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 500000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 500000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 466000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves": {
        "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves",
        "description": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves, classified as other.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 6958000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 15326000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 12770000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 10772000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 10772000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 10504000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 10504000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 5570000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 5570000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 5574000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 5574000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 5001000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 5001000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 5376000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 5376000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 6135000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross": {
        "label": "Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses on available-for-sale securities.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 6541000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 6541000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 9379000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 9379000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 26832000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 26832000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 10849000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 10849000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 32663000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 32663000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 4630000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 235000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 235000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 235000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 226000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 226000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 67000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsValuationAllowance": {
        "label": "Deferred Tax Assets, Valuation Allowance",
        "description": "Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 85000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 84000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 73000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 28000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 28000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 28000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 17000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 17000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 17000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilities": {
        "label": "Deferred Tax Liabilities, Net",
        "description": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 80372000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 90412000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 90666000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 86801000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 86801000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 96733000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 41022000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 72192000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 82469000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 67095000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 67095000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 60010000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 60010000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 50349000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 50349000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 52591000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 52591000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 126776000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 42028000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 42028000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 32847000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 3472000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 3472000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 3501000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts": {
        "label": "Deferred Tax Liabilities, Deferred Expense, Debt Issuance Costs",
        "description": "Amount of deferred tax liability attributable to taxable temporary differences from debt issuance costs.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 3970000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 3313000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 3420000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 3714000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 3714000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 4115000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 4302000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 4772000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 4532000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 6051000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 6051000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 10867000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 10867000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 8708000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 8708000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 10651000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 10651000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 11781000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 11781000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 13975000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 13975000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 14662000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesFinancingArrangements": {
        "label": "Deferred Tax Liabilities, Financing Arrangements",
        "description": "Amount of deferred tax liability attributable to taxable temporary differences from financing arrangements.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 9371000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 11334000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 11334000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 10366000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 10366000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 10216000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 10216000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 10762000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 12706000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 15492000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 15492000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 11651000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 11651000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 9131000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 9131000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 12674000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 12674000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 8101000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 8101000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 15265000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 15265000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 7725000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets": {
        "label": "Deferred Tax Liabilities, Intangible Assets",
        "description": "Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 11648000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 11681000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 11681000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 11897000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 11897000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 11929000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 17558000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 7729000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 7789000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 2040000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 2040000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 6335000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 6335000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 12252000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 12252000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 11713000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 11713000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 9148000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 9148000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 13012000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 13012000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 14257000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 56000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 56000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesOther": {
        "label": "Deferred Tax Liabilities, Other",
        "description": "Amount of deferred tax liability attributable to taxable temporary differences classified as other.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 4263000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 3952000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 5079000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 5373000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 5373000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 6352000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 4564000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 11395000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 13287000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 12026000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 12026000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 8501000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 8501000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 4565000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 4565000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 1722000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 1722000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 15993000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 15993000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 10193000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 10193000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 20998000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 56000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 35000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 35000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 169000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 149000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 149000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 130000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesOtherComprehensiveIncome": {
        "label": "Deferred Tax Liabilities, Other Comprehensive Income",
        "description": "Amount of deferred tax liability attributable to taxable temporary differences from unrealized gains in other comprehensive income.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 9218000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 10450000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 10450000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 13292000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 13292000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 3245000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 3245000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 1821000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 1821000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 24857000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 24857000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesPrepaidPensionCosts": {
        "label": "Deferred Tax Liabilities, Prepaid Pension Costs (Deprecated 2013-01-31)",
        "description": "The amount as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis of pension liabilities funded in advance and the basis of a prepaid pension asset determined in accordance with generally accepted accounting principles. The difference in basis of such costs will increase future taxable income when such basis difference reverses. Prepaid pension costs represented the cumulative employer's contributions in excess of net pension cost recognized, before the adoption of the recognition provisions of FAS 158. Under FAS 158, prepaid pension costs are no longer recognized in the statement of financial position.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 939000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": -25112000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": -25112000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": -46178000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesPropertyPlantAndEquipment": {
        "label": "Deferred Tax Liabilities, Property, Plant and Equipment",
        "description": "Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 13441000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 14954000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 14494000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 12465000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 12465000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 6226000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 4382000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 7562000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 7562000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 4987000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 4987000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 51249000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 51249000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 14984000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 14984000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAccumulatedBenefitObligation": {
        "label": "Defined Benefit Plan, Accumulated Benefit Obligation",
        "description": "Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 75815000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 75815000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2010-06-30",
              "val": 43131000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 41301000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 350974000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 412668000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 412668000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 485641000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 485641000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 448716000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 779100000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 904500000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 904500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 985000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 985000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 972700000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 973000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1100000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1070000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1070000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1120000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1120000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1120000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1090000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1090000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1110000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax": {
        "label": "Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax",
        "description": "Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 73696000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 125255000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 125255000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 158334000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 158334000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 17582000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 163030000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 172098000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax": {
        "label": "Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax",
        "description": "Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": -72089000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": -123858000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": -123858000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": -157147000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": -157147000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": -16605000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2018-12-31",
              "val": -162973000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": -172098000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": -172098000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": -91751000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": -91751000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 33223000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax": {
        "label": "Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax",
        "description": "Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 1607000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1397000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1397000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1187000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1187000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 977000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 57000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanActualReturnOnPlanAssets": {
        "label": "Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)",
        "description": "Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 48277000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 9501000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 9501000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 48702000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 48702000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 77230000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -59468000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 161506000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 161506000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 192792000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 192792000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 145720000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanActuarialGainLoss": {
        "label": "Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)",
        "description": "Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 38946000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 64540000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 64540000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -74060000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -87752000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 118964000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 118964000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 72080000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 72080000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -30591000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanActuarialNetGainsLosses": {
        "label": "Defined Benefit Plan, Actuarial Net (Gains) Losses (Deprecated 2012-01-31)",
        "description": "The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 25818000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 38946000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "DefinedBenefitPlanAmortizationOfGainsLosses": {
        "label": "Defined Benefit Plan, Amortization of Gain (Loss)",
        "description": "Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -3604000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -2080000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": -1155000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -3800000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -3190000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": -1977000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -6861000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -9510000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -13902000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -13902000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -10924000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -10924000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -10924000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -18994000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -6332000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -25324000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -25324000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -7000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -13000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": -7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -20320000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -20000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -6773000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -27093000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -9000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -9000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -3000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3"
            }
          ]
        }
      },
      "DefinedBenefitPlanAmortizationOfNetGainsLosses": {
        "label": "Defined Benefit Plan, Amortization of Net Gains (Losses) (Deprecated 2013-01-31)",
        "description": "The amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -17006000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "DefinedBenefitPlanAmortizationOfNetPriorServiceCostCredit": {
        "label": "Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit) (Deprecated 2013-01-31)",
        "description": "The amounts in accumulated other comprehensive income related to prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 210000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "DefinedBenefitPlanAmortizationOfPriorServiceCostCredit": {
        "label": "Defined Benefit Plan, Amortization of Prior Service Cost (Credit)",
        "description": "Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -210000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 115000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 68000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -210000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 105000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 66000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -210000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 210000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 79000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 79000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 57000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 57000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 57000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3"
            }
          ]
        }
      },
      "DefinedBenefitPlanAmountsRecognizedInBalanceSheet": {
        "label": "Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position",
        "description": "Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 2377000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": -64144000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": -64144000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": -117933000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": -117933000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-12-31",
              "val": -6661000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax",
        "description": "Amount, before tax, after reclassification adjustment, of increase (decrease) in accumulated other comprehensive income from gain (loss) of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3225000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 18031000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 18031000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 9068000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 9068000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 9068000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -80347000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -80347000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -124973000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYear": {
        "label": "Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year (Deprecated 2013-01-31)",
        "description": "The aggregate amount in accumulated other comprehensive income expected to be recognized as a component of net periodic benefit cost over the fiscal year that follows the most recent annual statement of financial position presented, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 17216000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear": {
        "label": "Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year (Deprecated 2017-01-31)",
        "description": "Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 6394000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssetsForPlanBenefitsCurrentAndNoncurrent": {
        "label": "Defined Benefit Plan, Assets for Plan Benefits (Deprecated 2017-01-31)",
        "description": "This represents the entire assets recognized in the balance sheet that are associated with the defined benefit plans.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 2377000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate": {
        "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate",
        "description": "Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.",
        "units": {
          "pure": [
            {
              "end": "2010-12-31",
              "val": 0.055,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0.0475,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 0.0475,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0.04,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0.0438,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0.0346,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 0.0346,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0.0276,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 0.0276,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0.0304,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease": {
        "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase",
        "description": "Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.",
        "units": {
          "pure": [
            {
              "end": "2010-12-31",
              "val": 0.045,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0.04,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 0.04,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0.04,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 0.04,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 0.04,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0.056,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0.056,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 0.056,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0.056,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 0.056,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0.056,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate": {
        "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate",
        "description": "Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.",
        "units": {
          "pure": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 0.06,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.06,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.06,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 0.06,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 0.055,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.055,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.055,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 0.055,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0.0475,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0.0475,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0.04,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.043,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.0376,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.0376,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.0438,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.0438,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.0438,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.0346,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.0346,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.0276,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets": {
        "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets",
        "description": "Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.",
        "units": {
          "pure": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 0.08,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.08,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.08,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 0.08,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 0.0775,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.0775,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.0775,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 0.0775,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0.075,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0.075,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0.0725,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.075,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.075,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.075,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.075,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.075,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.075,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.075,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.075,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.075,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease": {
        "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase",
        "description": "Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.",
        "units": {
          "pure": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 0.045,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.045,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.045,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 0.045,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 0.045,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.045,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.045,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 0.045,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0.04,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0.04,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0.04,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.04,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.04,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.04,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.056,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.056,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.056,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.056,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.056,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.056,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanBenefitObligation": {
        "label": "Defined Benefit Plan, Benefit Obligation",
        "description": "Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 382372000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 431090000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2010-12-31",
              "val": 431090000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 493648000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 493648000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2011-12-31",
              "val": 493648000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 580938000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 580938000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 530678000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 919428000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 852975000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 852975000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 990406000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 990406000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 990406000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1077653000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1077653000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1056310000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 409000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 409000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 409000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanBenefitObligationBenefitsPaid": {
        "label": "Defined Benefit Plan, Benefit Obligation, Benefits Paid",
        "description": "Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 29588000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 31560000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 31560000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 33309000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 33309000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 35967000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanBenefitsPaid": {
        "label": "Defined Benefit Plan, Benefits Paid (Deprecated 2017-01-31)",
        "description": "The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12221000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 13463000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 13463000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 15202000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 15202000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 16218000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "DefinedBenefitPlanContributionsByEmployer": {
        "label": "Defined Benefit Plan, Plan Assets, Contributions by Employer",
        "description": "Amount of contribution received by defined benefit plan from employer which increases plan assets.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 10000000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 30000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 30000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 50000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 50000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 3592000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 3592000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 100000000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 100000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 100000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 32000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanDebtSecurities": {
        "label": "Defined Benefit Plan, Debt Securities (Deprecated 2012-01-31)",
        "description": "The percentage of the fair value of debt securities to the fair value of total plan assets held as of the measurement date.",
        "units": {
          "pure": [
            {
              "end": "2010-12-31",
              "val": 0.38,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0.36,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanEquitySecurities": {
        "label": "Defined Benefit Plan, Equity Securities (Deprecated 2012-01-31)",
        "description": "The percentage of the fair value of equity securities to the fair value of total plan assets held as of the measurement date.",
        "units": {
          "pure": [
            {
              "end": "2010-12-31",
              "val": 0.61,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0.63,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear": {
        "label": "Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year (Deprecated 2013-01-31)",
        "description": "The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear": {
        "label": "Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year",
        "description": "Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": -25100000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years",
        "description": "Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 141253000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 150638000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 261027000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 269256000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 280173000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsInFiveFiscalYearsThereafter": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payments in Five Fiscal Years Thereafter (Deprecated 2012-01-31)",
        "description": "The amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 131733000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearFive": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payments in Year Five (Deprecated 2012-01-31)",
        "description": "The amount of the benefits expected to be paid in Year 5.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 21283000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearFour": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payments in Year Four (Deprecated 2012-01-31)",
        "description": "The amount of the benefits expected to be paid in Year 4.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 19542000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearOne": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payments in Year One (Deprecated 2012-01-31)",
        "description": "The amount of the benefits expected to be paid in Year 1.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 15756000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearThree": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payments in Year Three (Deprecated 2012-01-31)",
        "description": "The amount of the benefits expected to be paid in Year 3.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 18005000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsInYearTwo": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payments in Year Two (Deprecated 2012-01-31)",
        "description": "The amount of the benefits expected to be paid in Year 2.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 16794000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year One",
        "description": "Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 16781000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 18070000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 36251000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 38660000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 41051000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Five",
        "description": "Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 23238000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 24937000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 46234000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 48343000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 50756000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Four",
        "description": "Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 21445000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 23244000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 43891000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 46161000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 48548000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Three",
        "description": "Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 19679000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 21484000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 41511000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 43777000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 46266000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo": {
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Two",
        "description": "Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 18062000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 19662000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 38980000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 41340000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 43686000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear": {
        "label": "Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year",
        "description": "Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2017-06-30",
              "val": 50000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 50000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2018-03-31",
              "val": 50000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 50000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedReturnOnPlanAssets": {
        "label": "Defined Benefit Plan, Expected Return (Loss) on Plan Assets",
        "description": "Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 16018000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 9497000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 14352000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 8817000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 53244000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 60296000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 60296000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 62590000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 62590000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 62590000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 49267000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 16423000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 65689000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 65689000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 20000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 39000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 20000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 58823000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 59000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 19607000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 20000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 78430000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 22000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 22000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 44000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 44000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 22000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 22000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 65000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 65000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 22000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 22000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 21000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 21000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 43000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 43000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 22000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 22000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 64000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 64000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 21000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 21000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 23000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 23000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 46000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 46000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 23000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 23000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 69000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 69000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 23000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 23000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 24000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 24000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 47000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 23000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 71000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 24000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 25000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DefinedBenefitPlanFairValueOfPlanAssets": {
        "label": "Defined Benefit Plan, Plan Assets, Amount",
        "description": "Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 387411000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 433467000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2010-12-31",
              "val": 433467000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 429505000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 429505000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2011-12-31",
              "val": 429505000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 463005000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 463005000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 524017000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 881590000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 842534000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 842534000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 976072000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 976072000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 976072000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1235555000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1235555000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1345340000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 387000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 387000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 387000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 1345000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1404000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1404000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1404000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1589000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1589000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1589000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1648000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1648000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1796000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanFundedStatusOfPlan": {
        "label": "Defined Benefit Plan, Funded (Unfunded) Status of Plan",
        "description": "Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 2377000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": -64143000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": -64143000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": -117933000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": -117933000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": -6661000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2018-12-31",
              "val": -10441000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": -14334000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": -14334000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 157902000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 157902000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 289030000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanFutureAmortizationOfGainLoss": {
        "label": "Defined Benefit Plan, Future Amortization of Gain (Loss) (Deprecated 2017-01-31)",
        "description": "Amount included in accumulated other comprehensive income (AOCI) related to gain (loss) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -6184000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit": {
        "label": "Defined Benefit Plan, Future Amortization of Prior Service Cost (Credit) (Deprecated 2017-01-31)",
        "description": "Amount included in accumulated other comprehensive income (AOCI) related to prior service cost (credit) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 210000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "DefinedBenefitPlanInterestCost": {
        "label": "Defined Benefit Plan, Interest Cost",
        "description": "Amount of cost recognized for passage of time related to defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 12546000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 7317000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 22930000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 11905000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 7398000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 23810000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 23810000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 23711000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 23711000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 35593000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 34733000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 34733000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 37260000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 37260000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 37260000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 25648000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 8549000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 34197000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 34197000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 7000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 15000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 22398000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 22000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 7466000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 29864000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 11000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 11000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 22000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 22000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 11000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 11000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 33000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 33000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 11000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 11000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 15000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 15000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 30000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 30000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 15000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 15000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 45000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 45000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 15000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 15000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 15000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 15000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 30000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 30000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 15000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 15000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 45000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 45000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 16000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 16000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 32000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 16000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 48000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 16000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 16000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DefinedBenefitPlanNetPeriodicBenefitCost": {
        "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit)",
        "description": "Amount of net periodic benefit cost (credit) for defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 5394000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 2710000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 7481000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 4686000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7255000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 4572000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 4572000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -1582000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -1582000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -1582000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 6084000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2028000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8111000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8111000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": -1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -4591000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -1530000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -6122000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -5000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -9000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -13000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -5000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -4000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -4000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -8000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -8000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -4000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -12000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -12000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -4000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -6000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -6000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -11000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -11000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -5000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -5000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -17000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -17000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -6000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -6000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -6000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -6000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -11000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": -5000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -17000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": -6000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -7000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DefinedBenefitPlanOtherPlanAssets": {
        "label": "Defined Benefit Plan, Other Plan Assets (Deprecated 2012-01-31)",
        "description": "The percentage of the fair value of investments other than debt securities, equity securities, and real estate to the fair value of total plan assets held as of the measurement date.",
        "units": {
          "pure": [
            {
              "end": "2010-12-31",
              "val": 0.01,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0.01,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanPlanAssetsBenefitsPaid": {
        "label": "Defined Benefit Plan, Plan Assets, Benefits Paid",
        "description": "Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 29588000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 31560000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 31560000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 33309000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 33309000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 35967000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedBenefitPlanServiceCost": {
        "label": "Defined Benefit Plan, Service Cost",
        "description": "Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 6671000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 3667000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12191000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 6633000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 4062000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 13265000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 13265000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14241000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14241000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 15186000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 16154000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 16154000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 12767000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 12767000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 12767000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10709000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 3570000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14279000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14279000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 11514000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 12000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3838000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 15351000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 7000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 10000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 3000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 2000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 2000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 5000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 5000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 7000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 7000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 5000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 5000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 4000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 6000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear": {
        "label": "Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year (Deprecated 2017-01-31)",
        "description": "Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.",
        "units": {
          "USD": [
            {
              "start": "2013-10-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            }
          ]
        }
      },
      "DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesRangeMaximum": {
        "label": "Defined Benefit Plan, Target Allocation Percentage of Assets, Debt Securities, Range Maximum (Deprecated 2012-01-31)",
        "description": "Target allocation maximum percentage of investments in debt securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.",
        "units": {
          "pure": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.44,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.44,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesRangeMinimum": {
        "label": "Defined Benefit Plan, Target Allocation Percentage of Assets, Debt Securities, Range Minimum (Deprecated 2012-01-31)",
        "description": "Target allocation minimum percentage of investments in debt securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.",
        "units": {
          "pure": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.34,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.34,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecuritiesRangeMaximum": {
        "label": "Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities, Range Maximum (Deprecated 2012-01-31)",
        "description": "Target allocation maximum percentage of investments in equity securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.",
        "units": {
          "pure": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.65,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.65,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecuritiesRangeMinimum": {
        "label": "Defined Benefit Plan, Target Allocation Percentage of Assets, Equity Securities, Range Minimum (Deprecated 2012-01-31)",
        "description": "Target allocation minimum percentage of investments in equity securities to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.",
        "units": {
          "pure": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.55,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.55,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "DefinedBenefitPlanTargetAllocationPercentageOfAssetsOther": {
        "label": "Defined Benefit Plan, Target Allocation Percentage of Assets, Other (Deprecated 2012-01-31)",
        "description": "Target allocation percentage in other than debt securities, equity securities, and real estate to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position.",
        "units": {
          "pure": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0.01,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.01,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "DefinedBenefitPlanWeightedAverageAssetAllocations": {
        "label": "Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage",
        "description": "Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.",
        "units": {
          "pure": [
            {
              "end": "2010-12-31",
              "val": 1,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 1,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 1,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 1,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 1,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DefinedContributionPlanCostRecognized": {
        "label": "Defined Contribution Plan, Cost",
        "description": "Amount of cost for defined contribution plan.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 11582000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12307000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12307000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 13633000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 13633000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 13600000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14131000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14100000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14100000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 14900000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 14900000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 14900000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 16400000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 16400000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 22600000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 22600000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23500000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23500000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23500000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25300000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25300000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25300000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28600000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28600000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28600000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 30800000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 30800000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 30800000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 35600000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 35600000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 36000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36200000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 55000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 55000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 55000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 55000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 114000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 114000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 114000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 114000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 165000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 165000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 174000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "DefinedContributionPlanEmployerMatchingContributionPercent": {
        "label": "Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay",
        "description": "Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.",
        "units": {
          "pure": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0.75,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0.06,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.06,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.06,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.06,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.06,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.06,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedContributionPlanEmployerMatchingContributionPercentOfMatch": {
        "label": "Defined Contribution Plan, Employer Matching Contribution, Percent of Match",
        "description": "Percentage employer matches of the employee's percentage contribution matched.",
        "units": {
          "pure": [
            {
              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": 0.045,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": 0.045,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": 0.045,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": 0.045,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": 0.045,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": 0.045,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2007"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage": {
        "label": "Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage",
        "description": "Percentage of employer's matching contributions to a defined contribution plan that vests in a given year.",
        "units": {
          "pure": [
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            }
          ]
        }
      },
      "DemandDepositAccounts": {
        "label": "Demand Deposit Accounts",
        "description": "The amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 3976366000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 4331706000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 4331706000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 4885700000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 4885700000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 5241817000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 5241817000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 8086784000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 8086784000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 9274470000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 9274470000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 10130549000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 10130549000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 11237375000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 11237375000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 11882670000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 11882670000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 12926796000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 12926796000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 18014029000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 18014029000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 21404808000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "Deposits": {
        "label": "Deposits",
        "description": "The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 14358149000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 15348955000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 15337567000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 15337567000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 15337567000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 17843827000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 17787241000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 17787241000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 17743028000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 17743028000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 17743028000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 17635266000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 17635266000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 17635266000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 17635266000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 17635266000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 17635266000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 17811736000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 17811736000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 17662966000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 17662966000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 17663275000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 17663275000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 17663275000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 17577274000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 17577274000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 17577274000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 17577274000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 17577274000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 17759492000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 17759492000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 17801646000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 17801646000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 17893215000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 18086025000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 18086025000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 18086025000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 18086025000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 18086025000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 18064921000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 18018015000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 18063319000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 17874066000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 17874066000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 17874066000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 17874066000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 17874066000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 18763545000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 18556758000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 18406941000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 25678577000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 25678577000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 25678577000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 25678577000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 25678577000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 26300830000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 26511896000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 26719375000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 26930755000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 26930755000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 26930755000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 26930755000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 26930755000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 27365245000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 27257774000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 27925253000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 28161343000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 28161343000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 28161343000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 28161343000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 28161343000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 29002768000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 29456338000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 29333949000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 29266275000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 29266275000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 29266275000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 29266275000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 29266275000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 29969245000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 30408884000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 30163537000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 30672460000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 30672460000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 30672460000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 30672460000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 30672460000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 31198093000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 32719671000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 32743277000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 34431236000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 34431236000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 34431236000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 34431236000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 34431236000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 35346711000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 41479245000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 42250606000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 43431609000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 43431609000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 43431609000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 43431609000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 43431609000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2020-12-31",
              "val": 43432000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 47330997000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2021-03-31",
              "val": 47331000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 48410596000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-06-30",
              "val": 48411000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 50065762000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2021-09-30",
              "val": 50065000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 51406094000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 51406000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 51406000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 51406000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 51406000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 51406000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 51406000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 91597000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 91597000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 89329000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-06-30",
              "val": 89329000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 87553000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2022-09-30",
              "val": 87553000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 89408000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 89408000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 89408000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 89408000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 89408000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 89408000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2022-12-31",
              "val": 89408000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 140050000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2023-03-31",
              "val": 140050000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 141164000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-06-30",
              "val": 141164000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 146233000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-09-30",
              "val": 146233000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 145854000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 145854000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 145854000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 145854000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 145854000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 145854000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2023-12-31",
              "val": 145854000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 149609000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2024-03-31",
              "val": 149609000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 151079000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2024-06-30",
              "val": 151079000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 151574000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2024-09-30",
              "val": 151574000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 155229000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 155229000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 155229000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 155229000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 155229000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 159325000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2025-03-31",
              "val": 159325000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 159935000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 163190000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 161578000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 161578000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 170842000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DepositsMoneyMarketDeposits": {
        "label": "Deposits, Money Market Deposits",
        "description": "Amount of deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 5064644000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 5700981000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 5700981000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 6357309000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 6357309000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 6306942000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 6306942000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 8319569000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 8264811000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 8205705000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 8205705000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 8193392000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 8193392000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 8059271000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 8059271000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 8194818000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 8194818000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 9319087000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 6817752000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 8632713000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 8632713000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 10590106000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 10590000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 10590000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 10590000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 10590000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 26249000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 24699000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 21818000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 21040000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 21040000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 21040000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 21040000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 21040000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 21040000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 30598000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 29149000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 30082000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 30616000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 30611000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 30611000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 30616000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 30611000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 30625000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 31393000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 32636000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 34567000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 35722000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 35722000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 38687000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DepositsSavingsDeposits": {
        "label": "Deposits, Savings Deposits",
        "description": "Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 770849000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 817285000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 817285000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 905456000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 905456000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1004097000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 1004097000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 1204514000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1728504000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 1909021000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 1909021000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 2099579000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 2099579000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 2340449000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 2340449000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 2499750000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 2499750000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 2564777000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 2564777000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 3304167000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 3304167000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 4235824000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 4236000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4236000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 4236000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 4236000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 13506000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 13319000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 14722000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 16634000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 16634000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 16634000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 16634000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 16834000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 16834000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 17932000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 26389000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 32513000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 35258000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 35258000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 35258000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 35258000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 35258000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 35244000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 37688000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 39361000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 40266000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 42278000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 42278000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 46625000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DepreciationAmortizationAndAccretionNet": {
        "label": "Depreciation, Amortization and Accretion, Net",
        "description": "The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 53945000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 27816000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 42453000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 57724000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 57724000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 15299000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 30296000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 30296000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 46565000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 46565000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 46565000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 62761000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 62761000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 62761000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 16114000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 16114000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 32408000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 32408000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 48883000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 48883000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 48883000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 65170000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 65170000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 65170000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 16620000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 16620000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 33326000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 33326000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 50685000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 50685000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 68941000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 68941000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 68941000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 17994000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 17994000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 35545000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 35545000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 52212000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 52212000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 70841000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 70841000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 70841000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 17684000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 17684000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 35455000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 35455000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 53249000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 53249000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 75481000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 75481000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 75481000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 21965000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 21965000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 44312000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 44312000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 65559000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 65559000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 87717000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 87717000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 87717000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 22053000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 22053000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 44476000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 44476000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 66400000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 66400000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 88777000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 88777000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 88777000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 22616000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 22616000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 45420000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 45420000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 67749000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 67749000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 90804000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 90804000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 90804000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 23179000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 23179000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 47343000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 47343000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 71484000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 71484000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 96781000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 96781000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 96781000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 28195000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 28195000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 50574000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 50574000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 77024000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 77024000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 103828000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 103828000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 103828000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 26879000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 26879000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 53806000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 53806000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 81169000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 81169000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 108641000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 108641000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 133000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 27864000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 34000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 54053000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 67000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 80293000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 102000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 106585000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 143000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 143000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 143000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 126000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 114000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 271000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 263000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 399000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 399000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 533000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 533000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 533000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 533000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 124000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 124000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 90000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 90000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -12000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -12000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -57000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -57000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -57000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -57000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -12000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -12000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -6000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -6000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 36000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 36000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 130000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 130000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 93000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 93000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 193000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 284000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 405000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 180000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DerivativeFinancialInstrumentsLiabilitiesFairValueDisclosure": {
        "label": "Derivative Financial Instruments, Liabilities, Fair Value Disclosure (Deprecated 2013-01-31)",
        "description": "Derivative instrument obligations meeting the definition of a liability which the Company is a party to as of the balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 10714000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DerivativeNumberOfInstrumentsHeld": {
        "label": "Derivative, Number of Instruments Held",
        "description": "The number of derivative instruments of a particular group held by the entity.",
        "units": {
          "interestrateswaps": [
            {
              "end": "2011-09-30",
              "val": 1,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 1,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            }
          ],
          "pure": [
            {
              "end": "2011-06-30",
              "val": 1,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            }
          ]
        }
      },
      "DividendIncomeOperating": {
        "label": "Dividend Income, Operating",
        "description": "Amount of operating dividend income on securities.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 50424000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 242910000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 149819000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 149800000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 229685000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 229700000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 173091000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DividendsCommonStockCash": {
        "label": "Dividends, Common Stock, Cash",
        "description": "Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 11477000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -6262000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 9392000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 12522000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 12522000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 3130000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -6260000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 6260000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 9390000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 9390000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 9390000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12521000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12521000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 12521000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 3130000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 3130000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 6255000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 6255000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 9364000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 9364000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 9364000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 12430000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 12430000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 12430000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3085000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3085000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 6169000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 6169000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 9245000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 9245000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 12313000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 12313000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 12313000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2891000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2891000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 5777000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 5777000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 8663000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 8663000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 11548000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 11548000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 11548000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2885000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2885000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5771000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5771000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 8657000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 8657000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 12260000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 12260000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 12260000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3603000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3603000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 7206000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 7206000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10809000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10809000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14412000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14412000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14412000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3603000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3603000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 7206000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 7206000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10809000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10809000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14412000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14412000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14412000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3603000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3603000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 7206000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 7206000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 10809000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 10809000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 15013000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 15013000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1256000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 4204000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8408000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 12576000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 17243000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1458000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1608000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            }
          ]
        }
      },
      "DividendsPayableAmountPerShare": {
        "label": "Dividends Payable, Amount Per Share",
        "description": "The per share amount of a dividend declared, but not paid, as of the financial reporting date.",
        "units": {
          "USD/shares": [
            {
              "end": "2008-12-31",
              "val": 1.1,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 1.2,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2009-12-31",
              "val": 1.2,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 1.2,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 1.2,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1.2,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DividendsPayableCurrent": {
        "label": "Dividends Payable, Current",
        "description": "Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "units": {
          "USD": [
            {
              "end": "2013-09-30",
              "val": 2886000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2014-09-30",
              "val": 2886000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            }
          ]
        }
      },
      "DividendsPreferredStockCash": {
        "label": "Dividends, Preferred Stock, Cash",
        "description": "Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 9426000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4636000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14062000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14062000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 13908000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 14000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 4636000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18544000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            }
          ]
        }
      },
      "EarningsPerShareBasic": {
        "label": "Earnings Per Share, Basic",
        "description": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.",
        "units": {
          "USD/shares": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 18.8,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 7.11,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 3.66,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 10.96,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 3.85,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 13.11,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 12.92,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 5.78,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 10.34,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 10.34,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 4.56,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 4.56,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 14.6,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 14.6,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4.26,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4.26,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 17.43,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 17.35,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 17.35,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2.33,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2.34,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5.09,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5.11,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 2.76,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 2.77,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 7.83,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 7.87,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 2.74,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 2.76,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13.56,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13.56,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13.56,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5.31,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5.59,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 9.3,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 9.3,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 3.71,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 3.71,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 13.96,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 13.96,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 4.66,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 4.66,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 17.52,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 17.52,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 17.52,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4.34,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4.34,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 10.11,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 10.11,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 5.77,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 5.77,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 14.39,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 14.39,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 4.28,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 4.28,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 18.77,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 18.77,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 18.77,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5.63,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5.63,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 16.84,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 16.84,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 11.21,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 11.21,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 22.43,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 22.43,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 5.58,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 5.58,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 26.96,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 26.96,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 29.96,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 8.35,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 8.35,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 16.11,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 16.11,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 7.77,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 7.77,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 25.91,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 25.91,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 9.8,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 9.8,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 33.53,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 33.53,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 33.53,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 9.67,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 9.67,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 20.23,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 20.23,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 10.56,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 10.56,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 31.5,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 31.5,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 11.27,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 11.27,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 41.05,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 41.05,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 41.05,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5.46,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5.46,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 20.04,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 20.04,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 14.74,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 14.74,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 33.96,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 33.96,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 14.03,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 14.03,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 47.5,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 47.5,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 47.5,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 14.53,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 14.53,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 29.63,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 29.63,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15.09,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15.09,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 41.79,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 41.79,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 12.17,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 12.17,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 53.88,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 53.88,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 53.88,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 53.88,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 16.7,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 16.7,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 31.52,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 31.52,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 14.87,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 14.87,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 50.76,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 50.76,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 19.27,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 19.27,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67.47,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67.47,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67.47,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67.47,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 654.22,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 654.22,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 700.1,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 700.1,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 45.9,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 45.9,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 750.79,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 750.79,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 50.71,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 50.71,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 785.14,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 785.14,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 785.14,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 785.14,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 49.27,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 49.27,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 96.81,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 96.81,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 47.54,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 47.54,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 140.27,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 140.27,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 43.42,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 43.42,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 189.42,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 189.42,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 34.47,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 34.47,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 76.73,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 42.36,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 119.7,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 43.08,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 165.24,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 42.63,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "EarningsPerShareDiluted": {
        "label": "Earnings Per Share, Diluted",
        "description": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.",
        "units": {
          "USD/shares": [
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 33.96,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 14.03,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 47.5,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 14.53,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 29.63,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15.09,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 41.79,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 41.79,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 12.17,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 12.17,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 53.88,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 53.88,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 53.88,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 16.7,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 16.7,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 31.48,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 31.48,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 14.86,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 14.86,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 50.7,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 50.7,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 19.25,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 19.25,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67.4,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67.4,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67.4,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67.4,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 653.64,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 653.64,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 699.53,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 699.53,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 45.87,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 45.87,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 750.19,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 750.19,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 50.67,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 50.67,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 784.51,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 784.51,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 784.51,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 784.51,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 49.26,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 49.26,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 96.8,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 96.8,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 47.54,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 47.54,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 140.26,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 140.26,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 43.42,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 43.42,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 189.41,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 189.41,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 34.47,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 34.47,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 76.73,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 42.36,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 119.7,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 43.08,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 165.24,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 42.63,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateContinuingOperations": {
        "label": "Effective Income Tax Rate Reconciliation, Percent",
        "description": "Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "units": {
          "pure": [
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 0.369,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 0.346,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0.375,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 0.381,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0.341,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0.284,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0.284,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 0.221,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 0.221,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0.303,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 0.303,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 0.336,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 0.336,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 0.358,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0.362,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 0.366,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0.369,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0.385,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0.36,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0.353,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0.198,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0.121,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.204,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0.23,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0.23,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0.231,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0.226,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0.215,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.22,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.22,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.22,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -0.204,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -0.204,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0.063,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0.063,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0.242,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0.242,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0.133,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0.133,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0.229,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0.229,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.194,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.194,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.194,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.194,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -0.005,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -0.005,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0.016,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0.016,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0.239,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0.239,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0.036,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0.036,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0.246,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0.246,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.051,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.051,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.051,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.051,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0.272,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0.272,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0.275,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0.275,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0.278,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0.278,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0.273,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0.273,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0.268,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0.268,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.227,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.227,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0.258,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0.258,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 0.249,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0.241,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0.247,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0.244,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.257,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0.243,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": {
        "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent",
        "description": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).",
        "units": {
          "pure": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0.35,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0.35,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0.35,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0.35,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0.35,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0.35,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.35,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.21,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.35,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.21,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.21,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.21,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.21,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.21,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.21,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.21,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.21,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.21,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.21,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.21,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.21,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.21,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.21,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.21,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.21,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.21,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.21,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ],
          "Rate": [
            {
              "end": "2017-12-22",
              "val": 0.21,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-22",
              "val": 0.21,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-22",
              "val": 0.21,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q4I"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.35,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.35,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.35,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017"
            }
          ]
        }
      },
      "EquipmentExpense": {
        "label": "Equipment Expense",
        "description": "This element represents equipment expense including depreciation, repairs, rentals, and service contract costs. This item also includes equipment purchases which do not qualify for capitalization in accordance with the entity's accounting policy. This item may also include furniture expenses.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 57715000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 29472000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 14749000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 44462000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 14990000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 60310000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 60310000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 15815000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 32419000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 32419000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 16604000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 16604000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 49670000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 49670000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 49670000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 17251000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 17251000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 17251000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 66894000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 66894000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 66894000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 17391000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 17391000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 34906000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 34906000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 17515000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 17515000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 52384000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 52384000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 52384000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 17478000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 17478000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 17478000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 69951000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 69951000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 69951000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 18166000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 18166000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 36164000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 36164000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 17998000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 17998000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 54147000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 54147000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 17983000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 17983000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 74822000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 74822000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 74822000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 18946000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 18946000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 37644000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 37644000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 18698000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 18698000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 56466000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 56466000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 18822000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 18822000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 75545000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 75538000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 75538000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 18791000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 18773000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 38477000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 38354000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 19686000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 19581000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 57121000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 57121000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 18767000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 18767000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 79084000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 79084000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 79084000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 23541000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 23541000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 46837000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 46837000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 23296000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 23296000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 69284000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 69284000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 22447000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 22447000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 92639000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 92639000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 92639000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 22345000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 22345000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 45060000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 45060000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 22715000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 22715000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 68796000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 68796000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 23736000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 23736000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 92501000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 92501000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 92501000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 24588000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 24588000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 49242000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 49242000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 24654000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 24654000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 73129000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 73129000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 23887000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 23887000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 97478000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 97478000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 97478000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 24974000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 24974000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 50141000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 50141000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 25167000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 25167000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 76021000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 76021000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 25880000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 25880000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 102909000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 102909000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 102909000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 26740000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 26740000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 55229000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 55229000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 28489000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 28489000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 83999000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 83999000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 28770000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 28770000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 112290000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 112290000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 112290000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 27850000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 27850000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 56624000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 56624000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 28774000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 28774000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 86054000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 86054000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 29430000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 29430000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 115535000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 115535000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 116000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 29803000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 30000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 58705000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 59000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 28902000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 29000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 88934000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 89000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 30229000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 30000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 119171000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 119000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 119000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 119000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 52000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 52000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 106000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 106000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 54000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 54000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 161000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 161000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 55000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 55000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 216000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 216000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 216000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 216000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 58000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 58000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 191000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 191000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 133000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 133000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 308000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 308000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 117000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 117000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 422000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 422000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 422000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 422000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 114000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 114000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 240000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 240000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 126000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 126000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 368000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 368000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 128000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 128000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 504000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 504000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 136000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 136000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 267000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 131000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 404000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 137000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 555000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 136000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "EquitySecuritiesFvNi": {
        "label": "Equity Securities, FV-NI",
        "description": "Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-06-30",
              "val": 107264000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 109907000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 92599000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 92599000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 92599000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 92599000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 92599000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 109884000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 111489000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 116854000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 82333000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 82333000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 82333000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 82333000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 82333000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 315501000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 114316000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 93074000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 91680000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 91680000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 91680000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 91680000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 91680000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 106886000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 118540000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 123147000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 97528000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 98000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 98000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 98000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 98000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 100000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 94000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 92000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 85000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 76000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 75000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 79000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 78000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 82000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 95000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 97000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 110000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 127000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 127000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 130000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "EquitySecuritiesFvNiAndWithoutReadilyDeterminableFairValue": {
        "label": "Equity Securities, FV-NI and without Readily Determinable Fair Value",
        "description": "Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI) and investment in equity security without readily determinable fair value.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 12500000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 12500000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 12500000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 12900000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 13100000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 13500000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 11600000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 11600000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 11600000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 11400000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 11700000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 9600000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "EquitySecuritiesFvNiCost": {
        "label": "Equity Securities, FV-NI, Cost",
        "description": "Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 73809000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 73809000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 73809000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 73809000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 73809000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 79809000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 80542000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 87588000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 59262000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 59262000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 59262000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 59262000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 59262000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 344161000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 116322000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 100408000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 84837000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 84837000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 84837000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 84837000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 84837000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 84297000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 84297000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 85554000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 72894000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 73000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 73000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 73000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 73000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 73000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 73000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 73000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 75000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 75000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 75000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 75000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 75000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 75000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 70000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 79000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 79000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 79000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 79000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 79000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 78000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 78000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 78000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 83000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 83000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 83000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "EquitySecuritiesFvNiGainLoss": {
        "label": "Equity Securities, FV-NI, Gain (Loss)",
        "description": "Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 971000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5411000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4440000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 9265000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3854000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -7610000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -7610000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -7610000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2018-10-01",
              "end": "2018-12-31",
              "val": -16875000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11328000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11328000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 14472000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 14472000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 3144000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 3144000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13505000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13505000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -967000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -967000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 20625000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 20625000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -51408000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -51408000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 13162000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 13162000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 64570000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 64570000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10461000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -2701000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 29395000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60253000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 29000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 16011000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 16000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 27665000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 28000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 11654000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 12000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 31000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33119000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 34000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 34000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 34000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -5000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -3000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -9000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -9000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -19000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -19000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -10000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -10000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -20000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -20000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -11000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -11000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -11000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -11000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -4000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -4000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -6000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -6000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -2000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 3000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 3000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 9000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 9000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 13000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 13000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -5000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -5000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 10000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 13000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 22000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 3000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "EquitySecuritiesFvNiRealizedGainLoss": {
        "label": "Equity Securities, FV-NI, Realized Gain (Loss)",
        "description": "Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1190000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2018-10-01",
              "end": "2018-12-31",
              "val": 9000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4"
            }
          ]
        }
      },
      "EquitySecuritiesFvNiUnrealizedGain": {
        "label": "Equity Securities, FV-NI, Unrealized Gain",
        "description": "Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 19010000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 19010000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 30252000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 31163000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 29605000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 19010000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019"
            }
          ]
        }
      },
      "EquitySecuritiesFvNiUnrealizedGainLoss": {
        "label": "Equity Securities, FV-NI, Unrealized Gain (Loss)",
        "description": "Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -8800000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -8800000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -8800000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2018-10-01",
              "end": "2018-12-31",
              "val": -16884000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4281000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4281000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4281000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -15155000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -15155000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 16000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 28000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 12000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 31000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 17820000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            }
          ]
        }
      },
      "EquitySecuritiesFvNiUnrealizedLoss": {
        "label": "Equity Securities, FV-NI, Unrealized Loss",
        "description": "Amount of unrealized loss on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 220000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 220000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 177000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 216000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 339000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 220000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019"
            }
          ]
        }
      },
      "FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisGainLossIncludedInEarnings": {
        "label": "Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings",
        "description": "Amount of gain (loss) recognized in income from asset and liability measured at fair value on recurring basis using unobservable input (level 3).",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "FairValueAssetsLevel1ToLevel2TransfersAmount": {
        "label": "Fair Value, Assets, Level 1 to Level 2 Transfers, Amount",
        "description": "Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.",
        "units": {
          "USD": [
            {
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "FairValueAssetsLevel2ToLevel1TransfersAmount": {
        "label": "Fair Value, Assets, Level 2 to Level 1 Transfers, Amount",
        "description": "Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.",
        "units": {
          "USD": [
            {
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "FairValueLevel1ToLevel2TransfersAmount": {
        "label": "Fair Value, Level 1 to level 2 Transfers, Amount (Deprecated 2012-01-31)",
        "description": "The amount of the transfers of assets or liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "FairValueLevel2ToLevel1TransfersAmount": {
        "label": "Fair Value, Level 2 to level 1 Transfers, Amount (Deprecated 2012-01-31)",
        "description": "The amount of the transfers of assets or liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "FairValueLiabilitiesLevel1ToLevel2TransfersAmount": {
        "label": "Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount",
        "description": "Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.",
        "units": {
          "USD": [
            {
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            }
          ]
        }
      },
      "FairValueLiabilitiesLevel2ToLevel1TransfersAmount": {
        "label": "Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount",
        "description": "Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.",
        "units": {
          "USD": [
            {
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3",
        "description": "Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy.",
        "units": {
          "USD": [
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1800000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1800000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1800000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1800000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1800000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1800000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            }
          ]
        }
      },
      "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings (Deprecated 2012-01-31)",
        "description": "This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) (Deprecated 2012-01-31)",
        "description": "This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity).",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases",
        "description": "Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 176892000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 140645000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements)",
        "description": "Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales",
        "description": "Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -152307000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 157999000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net",
        "description": "Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -1287000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -1287000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -1287000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -1287000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue": {
        "label": "Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value",
        "description": "Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 1287000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2009-12-31",
              "val": 1287000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 1287000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2009-12-31",
              "val": 1287000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 165590000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 198998000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersNet": {
        "label": "Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers, Net",
        "description": "Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into (out of) level 3 of the fair value hierarchy.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            }
          ]
        }
      },
      "FairValueOptionChangesInFairValueGainLoss1": {
        "label": "Fair Value, Option, Changes in Fair Value, Gain (Loss)",
        "description": "For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -2400000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3161000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3452000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 291000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 3556000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 104000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 2900000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 2900000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -455000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -455000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 245000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 700000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 700000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -528000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -528000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -773000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -773000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 50000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 50000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 50000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 249000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 249000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 167000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": -82000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": -82000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 750000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 750000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 583000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 583000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 289000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 289000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 289000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1200000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1200000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3600000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3600000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2400000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2400000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 4200000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 4200000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 567000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 600000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3900000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3900000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -2700000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -2300000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 400000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -2900000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -600000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -2000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -3000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue": {
        "label": "Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due",
        "description": "This item represents the aggregate fair value of loans held as assets that are 90 days or more past due for which the fair value option has been elected.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatus": {
        "label": "Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status",
        "description": "This item represents the aggregate fair value of loans held as assets that are in nonaccrual status for which the fair value option has been elected, if the entity's policy is to recognize interest income separately from other changes in fair value.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FDICIndemnificationAsset": {
        "label": "FDIC Indemnification Asset",
        "description": "Carrying amount of receivable assets originating from the indemnification agreement with the Federal Deposit Insurance Corporation (FDIC), in which the FDIC is to partially cover losses.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 671023000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 617377000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2011-12-31",
              "val": 617377000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2011-12-31",
              "val": 617377000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-06-30",
              "val": 405626000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 329619000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 270192000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 270192000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2012-12-31",
              "val": 270192000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2012-12-31",
              "val": 270192000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2012-12-31",
              "val": 270192000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2012-12-31",
              "val": 270192000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 195942000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 158013000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2013-06-30",
              "val": 158013000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-06-30",
              "val": 158013000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 100553000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2013-09-30",
              "val": 100553000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2013-12-31",
              "val": 93397000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 74784000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2014-03-31",
              "val": 74784000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2014-03-31",
              "val": 74784000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-03-31",
              "val": 74784000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 49959000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2014-06-30",
              "val": 49959000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-06-30",
              "val": 49959000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-06-30",
              "val": 49959000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 45140000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-09-30",
              "val": 45140000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2014-12-31",
              "val": 28701000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 21340000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 21340000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-03-31",
              "val": 21340000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-03-31",
              "val": 21340000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 5808000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 5808000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-06-30",
              "val": 5808000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-06-30",
              "val": 5808000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 9276000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 9276000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 4054000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 7474000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 7474000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-03-31",
              "val": 7474000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-03-31",
              "val": 7474000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 5281000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 5281000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-06-30",
              "val": 5281000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-06-30",
              "val": 5281000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 3108000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 3108000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 4172000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 4172000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 4172000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 4172000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 4172000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 4172000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 3981000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 3981000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-03-31",
              "val": 3981000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 3766000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 3766000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 4610000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 2223000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 2223000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 3636000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            }
          ]
        }
      },
      "FDICIndemnificationAssetAcquisitions": {
        "label": "FDIC Indemnification Asset, Acquisitions",
        "description": "Amount of increases to the indemnification asset due to acquisitions of assets relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC).",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 5106000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 5106000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            }
          ]
        }
      },
      "FDICIndemnificationAssetCashPaymentsReceived": {
        "label": "FDIC Indemnification Asset, Cash Payments Received",
        "description": "Amount of decreases to the indemnification asset due to cash payments received relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC).",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -293067000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -223863000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -251972000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -251972000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -42519000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -46534000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -45103000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -45103000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -19373000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -19373000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3490000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3490000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 4350000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 4350000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 5479000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 5479000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1286000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5762000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5762000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 10890000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 10890000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 24805000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 24805000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 9871000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 9871000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 13502000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 13502000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 16701000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 16701000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2760000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2760000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 5197000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 5197000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 7440000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 7440000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 8000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            }
          ]
        }
      },
      "FDICIndemnificationAssetDisposals": {
        "label": "FDIC Indemnification Asset, Disposals",
        "description": "Amount of decreases to the indemnification asset due to disposals relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC).",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1462000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1462000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1462000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1462000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1462000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1462000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1462000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1462000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 240000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 240000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 240000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 240000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 240000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "FDICIndemnificationAssetPeriodIncreaseDecrease": {
        "label": "FDIC Indemnification Asset, Period Increase (Decrease)",
        "description": "Change in carrying amount of the indemnification asset relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC). The change includes for example, but is not limited to, acquisitions, additional estimated losses, disposals, cash payments, accretion of discount and write-offs, net of recoveries.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -7181000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 58802000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 71771000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 71771000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4359000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 17121000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 16708000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 16708000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 27666000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 27666000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 27666000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 8092000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 8092000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 27291000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 27291000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 35395000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 35395000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 47044000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 47044000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 47044000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4076000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4076000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 7571000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 7571000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 11926000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 11926000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14745000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14745000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2591000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2591000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 4821000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 4821000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 5799000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 5799000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7764000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -1834000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            }
          ]
        }
      },
      "FederalDepositInsuranceCorporationPremiumExpense": {
        "label": "Federal Deposit Insurance Corporation Premium Expense",
        "description": "Amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 5126000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 17949000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 13763000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 23446000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 5497000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 29344000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 29344000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 4887000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 11496000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 11496000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 6609000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 6609000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 17338000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 17338000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 17338000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 5842000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 5842000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 5842000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 23167000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 23167000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 23167000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 8225000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 8225000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 10726000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 10726000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 2501000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 2501000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 13494000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 13494000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 13494000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2768000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2768000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2768000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 16459000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 16459000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 16459000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3057000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3057000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 5723000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 5723000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2666000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2666000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 7739000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 7739000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 2016000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 2016000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 10656000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 10656000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 10656000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2666000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2666000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 5089000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 5089000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 2423000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 2423000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 7795000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 7795000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2706000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2706000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10175000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10175000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10175000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2636000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2636000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5276000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5276000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 2640000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 2640000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 8191000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 8191000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 2915000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 2915000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 12979000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 12979000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 12979000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 4271000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 4271000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 8822000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 8822000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4551000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4551000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 13755000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 13755000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 4933000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 4933000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18340000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18340000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18340000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4789000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4789000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 9377000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 9377000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4588000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4588000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 15173000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 15173000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 5796000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 5796000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 20967000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 20967000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 20967000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5593000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5593000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 11298000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 11298000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 5705000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 5705000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 16747000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 16747000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 5449000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 5449000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22191000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22191000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22191000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 5733000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 5733000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11225000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11225000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 5492000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 5492000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 16411000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 16411000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 5186000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 5186000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 18890000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 18890000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 18890000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2660000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2660000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5417000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5417000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2757000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2757000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 7857000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 7857000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 2440000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 2440000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 10664000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 10664000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 10664000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 3466000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 3466000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7197000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7197000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 3731000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 3731000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 9364000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 9364000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2167000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2167000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 12701000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 12701000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3218000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 6600000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 3382000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 10261000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3661000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14132000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 12000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 12000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 21000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 21000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 26000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 26000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 31000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 31000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 31000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 31000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 18000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 18000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 40000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 40000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 22000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 22000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 76000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 76000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 36000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 36000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 158000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 158000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 158000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 158000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 41000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 41000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 74000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 74000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 33000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 33000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 105000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 105000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 31000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 31000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 138000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 138000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 38000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 38000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 76000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 38000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 114000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 38000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 141000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 38000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds": {
        "label": "Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds",
        "description": "Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 1960000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 1960000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 1960000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-06-30",
              "val": 2090000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2070000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 5570000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 5570000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 5570000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 5570000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 5570000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 5500000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 5340000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 5290000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 4840000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 4840000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 4840000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 4840000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 4840000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 4910000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 4720000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 5100000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 5240000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 5240000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 5240000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 5240000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 5240000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 6170000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 6090000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 6080000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 6180000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 6180000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 6180000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 6180000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 6180000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 6170000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 6260000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 6350000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 6010000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 6010000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 6010000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 6010000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 7430000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 7860000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 7540000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            }
          ]
        }
      },
      "FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1": {
        "label": "Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged",
        "description": "Amount of the collateral pledged in support of federal home loan bank advances outstanding.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 2200000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 2200000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-06-30",
              "val": 2380000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2590000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 6080000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 6080000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 6080000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 6080000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 6000000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 5960000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 5500000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 5500000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 5500000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 5570000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 5560000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 5940000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 6080000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 6080000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 6080000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 6260000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 6220000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 6340000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 6360000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 6360000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 6360000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 6360000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 6360000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 6450000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 6540000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 6570000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 6570000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 6570000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 6570000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 8220000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 8520000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 8190000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            }
          ]
        }
      },
      "FederalHomeLoanBankAdvancesLongTerm": {
        "label": "Long-term Federal Home Loan Bank Advances",
        "description": "Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 193556000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 193556000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 193556000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 193556000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 189594000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 197131000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 192672000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 572185000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 572185000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 572185000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 572185000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 572185000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 792684000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 657682000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 655179000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 655175000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 655175000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 655175000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 655175000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 648671000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 646667000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 644659000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "FederalHomeLoanBankAdvancesMaturitiesSummaryByInterestRateTypeFixedRate": {
        "label": "Federal Home Loan Bank, Advances, Maturities Summary, Fixed Rate",
        "description": "Amount of Federal Home Loan Bank (FHLB) advances which have fixed interest.",
        "units": {
          "USD": [
            {
              "end": "2016-06-30",
              "val": 200000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 200000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 200000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 200000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 200000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 200000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 200000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "FederalHomeLoanBankStock": {
        "label": "Federal Home Loan Bank Stock",
        "description": "Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 71959000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 68916000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 68916000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 67103000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 66488000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 63730000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 63730000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 61397000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 61397000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 61397000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 58508000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 57889000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 54341000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 53735000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 43000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 43000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 43000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 51100000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 45400000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 45400000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 45400000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 45400000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 45400000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 40600000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 40500000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 40500000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 39000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 83000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 234000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 197000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 197000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 197000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 197000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 197000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 197000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 393000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 119000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 19000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 20000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "FeesAndCommissionsCorrespondentClearing": {
        "label": "Fees and Commissions, Correspondent Clearing (Deprecated 2018-01-31)",
        "description": "Service revenue earned by a depository institution that holds the account balances of other financial institutions and provides services thereto. Such services include check collection and item processing.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 15209000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4539000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4861000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 10543000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 5682000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 17846000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 17846000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 7303000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 7303000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 50000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 95000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 45000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 140000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 45000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3"
            }
          ]
        }
      },
      "FeesAndCommissionsCreditAndDebitCards": {
        "label": "Fees and Commissions, Credit and Debit Cards (Deprecated 2018-01-31)",
        "description": "Amount of income earned from credit card services (including late, over limit, and annual fees) and debit card services (including interchange fees, annual fees and other fees). Excludes interest income earned on credit card balances and transactions.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 56279000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 33540000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 11505000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 45174000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 45174000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 11071000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 23097000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 12026000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 35887000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 35887000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 12791000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 12791000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 48360000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 48360000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 48360000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 11832000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 11832000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 25089000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 25089000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 13257000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 13257000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 38337000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 38337000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 13248000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 13248000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 56820000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 59607000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 59607000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 18401000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 18401000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 37615000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 37615000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 19214000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 19214000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 57203000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 57203000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 19588000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 19588000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 77342000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 77342000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 77342000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 19358000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 19358000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 40412000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 40412000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 21054000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 21054000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 61949000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 61949000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 21537000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 21537000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 83417000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 83417000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 21258000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 11907000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 45545000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 24287000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 70006000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 24461000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 95365000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 14782000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "FeesAndCommissionsDepositorAccounts": {
        "label": "Fees and Commissions, Depositor Accounts (Deprecated 2018-01-31)",
        "description": "Includes amounts charged depositors for: (1) maintenance of their accounts (maintenance charges); (2) failure to maintain specified minimum balances on account; (3) exceeding the number of checks or transactions allowed to be processed in a given period; (4) checks drawn on no minimum balance deposit accounts; (5) withdrawals from nontransaction deposit accounts; (6) closing savings accounts before a specified minimum period of time has elapsed; (7) accounts which have remained inactive for extended periods of time or which have become dormant; (8) use of automated teller machines or remote service units; (9) checks drawn against insufficient funds that the bank assesses regardless of whether it decides to pay, return or hold the check; (10) issuing stop payment orders; (11) certifying checks; and (12) accumulating or disbursing funds deposited in IRAs or Keogh Plan accounts when not handled by the bank's trust department. This item does not include penalties assessed on the early withdrawal of time deposits.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 82349000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 37014000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 19163000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 57350000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 20336000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 78028000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 78028000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 18827000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 38340000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 38340000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 19513000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 19513000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 56403000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 56403000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 56403000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 18063000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 18063000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 18063000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 73762000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 73762000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 73762000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 15790000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 15790000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 31568000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 31568000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 15778000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 15778000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 47957000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 47957000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 47957000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 16389000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 16389000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 16389000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 63775000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 63775000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 63775000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 14846000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 14846000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 29907000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 29907000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 15061000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 15061000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 45456000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 45456000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 15549000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 15549000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 61564000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 61564000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 61564000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 14999000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 14999000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 29882000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 29882000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 14883000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 14883000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 45428000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 45428000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 15546000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 15546000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 60661000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 60661000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 60661000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 14440000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 14440000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 29705000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 29705000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 15265000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 15265000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 45194000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 45194000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 15489000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 15489000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 69100000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 69100000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 69100000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 22058000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 22058000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 44419000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 44419000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 22361000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 22361000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 67572000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 67572000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 23153000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 23153000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 90546000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 90546000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 90546000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 21850000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 21850000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 43734000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 43734000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 21884000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 21884000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 66888000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 66888000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 23154000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 23154000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 89359000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 89359000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 22142000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 22142000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 48004000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 25862000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 73955000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 25951000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 101201000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 26543000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "FeesAndCommissionsMortgageBanking": {
        "label": "Fees and Commissions, Mortgage Banking (Deprecated 2018-01-31)",
        "description": "The noninterest income derived from mortgage banking activities (fees and commissions), excluding fees earned from servicing third-party assets.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 6564000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 5821000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 2369000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 8665000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 2844000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 10435000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 10435000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 1411000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 3334000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 3334000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 1924000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 1924000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 6347000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 6347000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 6347000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 3013000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 3013000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 3013000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 9699000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 9699000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 9699000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2315000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2315000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 4845000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 4845000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 2530000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 2530000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 8839000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 8839000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 8839000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 3994000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 3994000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 3994000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 12214000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 12214000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 6597000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 4611000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 2924000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4848000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 3099000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 237000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 175000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 7183000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 4718000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 2335000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 1619000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 11268000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 8072000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 8072000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3788000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3788000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 7457000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 7457000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 3669000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 3669000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 9734000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 9734000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2277000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2277000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 11065000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 11065000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 11065000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 955000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 955000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 2165000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 2165000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 1210000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 1210000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 3329000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 3329000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 1164000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 1164000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 5828000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 5828000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 5828000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 4549000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 4549000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 10120000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 10120000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 5571000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 5571000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 14972000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 14972000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 4852000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 4852000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18168000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18168000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18168000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1311000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1311000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 5848000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 5848000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4537000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4537000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 12540000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 12540000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 6692000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 6692000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 20348000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 20348000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 7576000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 7576000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 12542000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 4966000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 19317000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 6775000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 23251000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 4237000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "FeesAndCommissionsOther": {
        "label": "Fees and Commissions, Other (Deprecated 2018-01-31)",
        "description": "Amount of fee and commission revenue classified as other.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 17598000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 8417000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 4068000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 12495000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 4078000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 16411000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 16411000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 4648000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 9758000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 9758000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 5110000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 5110000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 14492000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 14492000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 14492000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 4734000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 4734000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 4734000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 20820000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 20820000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 20820000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 5957000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 5957000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 11917000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 11917000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 5960000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 5960000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 18173000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 18173000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 18173000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 6256000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 6256000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 6256000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 22647000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 22647000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 22647000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3441000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3441000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 7015000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 7015000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 3574000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 3574000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 10392000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 10392000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 3377000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 3377000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14239000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14239000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14239000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3766000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3766000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 7732000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 7732000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 3966000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 3966000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 11775000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 11775000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4043000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4043000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 15696000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 15696000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 15696000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3944000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3944000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 8194000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 8194000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 4250000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 4250000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 12195000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 12195000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 4001000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 4001000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17760000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17760000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17760000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5455000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5455000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 11140000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 11235000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 5685000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 5730000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 17303000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 17443000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 6163000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 6208000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 23807000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 23807000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 23987000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 6989000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 6989000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 14126000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 14126000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 7137000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 7137000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 21693000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 21693000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 7567000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 7567000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26940000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 27011000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 7601000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 7601000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 14229000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 6628000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 21302000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 7073000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 28321000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 7480000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "FinanceLeaseInterestExpense": {
        "label": "Finance Lease, Interest Expense",
        "description": "Amount of interest expense on finance lease liability.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 65000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 127000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 62000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 220000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 93000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 259000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 259000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 220000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 220000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 162000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinanceLeaseInterestPaymentOnLiability": {
        "label": "Finance Lease, Interest Payment on Liability",
        "description": "Amount of interest paid on finance lease liability.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 65000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 127000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 220000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 259000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 259000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 220000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 220000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 162000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinanceLeaseLiability": {
        "label": "Finance Lease, Liability",
        "description": "Present value of lessee's discounted obligation for lease payments from finance lease.",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 7828000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 7459000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 8610000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 8230000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 8230000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 8230000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 8230000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 8230000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 9024000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 7463000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 6703000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 6308000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 6308000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 6308000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 6308000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 6308000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 5915000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 5519000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 4720000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 4311000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 7000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 9000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 8000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 8000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 8000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 36000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 63000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 67000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 72000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 72000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 73000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityPaymentsDue": {
        "label": "Finance Lease, Liability, Payment, Due",
        "description": "Amount of lessee's undiscounted obligation for lease payments for finance lease.",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 8576000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 8145000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 9288000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 8853000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 6711000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 4552000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 85000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityPaymentsDueAfterYearFive": {
        "label": "Finance Lease, Liability, to be Paid, after Year Five",
        "description": "Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 1683000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 1683000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 1683000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 1066000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 431000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 10000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 23000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityPaymentsDueNextTwelveMonths": {
        "label": "Finance Lease, Liability, to be Paid, Year One",
        "description": "Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 1301000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 870000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 435000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 2142000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 2159000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1876000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 3000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 14000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityPaymentsDueYearFive": {
        "label": "Finance Lease, Liability, to be Paid, Year Five",
        "description": "Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 599000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 599000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 993000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 617000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 635000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 431000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityPaymentsDueYearFour": {
        "label": "Finance Lease, Liability, to be Paid, Year Four",
        "description": "Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 1481000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 1481000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 1876000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 993000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 617000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 635000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityPaymentsDueYearThree": {
        "label": "Finance Lease, Liability, to be Paid, Year Three",
        "description": "Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 1764000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 1764000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 2159000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 1876000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 993000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 617000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityPaymentsDueYearTwo": {
        "label": "Finance Lease, Liability, to be Paid, Year Two",
        "description": "Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 1748000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 1748000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 2142000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 2159000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1876000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 993000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 3000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityUndiscountedExcessAmount": {
        "label": "Finance Lease, Liability, Undiscounted Excess Amount",
        "description": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 748000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 686000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 678000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 623000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 403000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 241000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 5000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 13000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FinanceLeasePrincipalPayments": {
        "label": "Finance Lease, Principal Payments",
        "description": "Amount of cash outflow for principal payment on finance lease.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 366000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 735000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1111000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1850000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1850000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1922000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1922000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1997000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 5000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 8000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinanceLeaseRightOfUseAsset": {
        "label": "Finance Lease, Right-of-Use Asset, after Accumulated Amortization",
        "description": "Amount, after accumulated amortization, of right-of-use asset from finance lease.",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 8763000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 8098000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 9402000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 8820000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 8820000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 8820000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 8820000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 8820000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 9261000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 7547000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 7005000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 6478000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 6478000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 6478000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 6478000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 6478000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 5936000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 5394000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 4852000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 4310000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 7000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 9000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 9000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 8000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 8000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 7000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 35000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 60000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 67000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 71000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 71000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 71000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FinanceLeaseRightOfUseAssetAmortization": {
        "label": "Finance Lease, Right-of-Use Asset, Amortization",
        "description": "Amount of amortization expense attributable to right-of-use asset from finance lease.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 447000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 893000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 446000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1434000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 541000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1975000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1975000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2168000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2168000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2168000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 6000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 3000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 9000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 3000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinanceLeaseWeightedAverageDiscountRatePercent": {
        "label": "Finance Lease, Weighted Average Discount Rate, Percent",
        "description": "Weighted average discount rate for finance lease calculated at point in time.",
        "units": {
          "pure": [
            {
              "end": "2019-03-31",
              "val": 0.0322,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 0.0323,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 0.0307,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 0.0306,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0.0308,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0.0312,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 0.0312,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0.0312,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0.0312,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0.0312,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.0311,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.031,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.0234,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.0234,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0.0234,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0.0234,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0.0234,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0.0234,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0.0234,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.0234,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.0233,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.0348,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.0352,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.0352,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0.0352,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0.0352,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0.0352,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0.0352,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0.0355,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0.0359,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0.0363,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0.0396,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0.0396,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0.0396,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0.0396,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0.0396,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0.0431,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0.0433,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0.042,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0.042,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0.042,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0.0421,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FinancialInstrumentsOwnedAndPledgedAsCollateralAtFairValue": {
        "label": "Financial Instruments, Owned and Pledged as Collateral, at Fair Value",
        "description": "The fair value as of the balance sheet date of financial instruments and other positions owned by the entity and pledged to counterparties as collateral, including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 9656000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-09-30",
              "val": 9651000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 7004000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 7000000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 7000000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 7000000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 7005000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 7000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 7000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 7000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 7000000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 2000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 2017000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 2000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 2000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q4I"
            }
          ]
        }
      },
      "FinancingReceivableAllowanceForCreditLosses": {
        "label": "Financing Receivable, Allowance for Credit Loss",
        "description": "Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 270144000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 319018000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2012-12-31",
              "val": 319018000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 233394000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 233394000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2013-12-31",
              "val": 233394000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 206216000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 206216000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 206216000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 218795000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 218795000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 221893000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 221893000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 228775000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-03-31",
              "val": 228775000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 226583000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-06-30",
              "val": 226583000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 226825000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 209259000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2020-03-31",
              "val": 209259000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-03-31",
              "val": 209259000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-03-31",
              "val": 209259000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 222450000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-06-30",
              "val": 222450000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-06-30",
              "val": 222450000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-06-30",
              "val": 222450000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 223936000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-09-30",
              "val": 223936000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 210651000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2021-03-31",
              "val": 210651000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 189094000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-06-30",
              "val": 189094000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 183194000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 178493000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "FinancingReceivableAllowanceForCreditLossesRecovery": {
        "label": "Financing Receivable, Allowance for Credit Loss, Recovery",
        "description": "Amount of increase in allowance for credit loss on financing receivable from recovery.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 6942000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 6467000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 6467000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 7289000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 7289000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 7289000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 8202000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 8202000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 8202000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 9434000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 9434000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 9434000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 9839000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 9839000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14088000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 13023000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3467000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 6679000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 3212000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 9802000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 3123000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 13015000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 6755000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 6755000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 11458000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 11458000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4703000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4703000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 17834000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 17834000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 6376000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 6376000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 22657000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 22657000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 5874000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 6000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 11448000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5574000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 17741000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 6293000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 26436000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 18000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            }
          ]
        }
      },
      "FinancingReceivableAllowanceForCreditLossesWriteOffs": {
        "label": "Financing Receivable, Allowance for Credit Loss, Writeoff",
        "description": "Amount of writeoff of financing receivable, charged against allowance for credit loss.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -196840000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -100478000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 100478000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -68026000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 68026000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 68026000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 37770000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 37770000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 37770000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 28348000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 28348000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 28348000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 30201000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 30201000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 36682000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 39671000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 10154000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 20756000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 10602000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 30403000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 9647000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 43027000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 14261000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 14261000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 26325000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 26325000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 12064000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 12064000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 35257000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 35257000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 8932000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 8932000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 45105000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 45105000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 8563000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 16091000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 7528000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 27164000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 11073000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 35422000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 33000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            }
          ]
        }
      },
      "FinancingReceivableCollectivelyEvaluatedForImpairment": {
        "label": "Financing Receivable, Collectively Evaluated for Impairment",
        "description": "The balance of financing receivables that were collectively evaluated for impairment.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 11972152000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 17463374000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            }
          ]
        }
      },
      "FinancingReceivableIndividuallyEvaluatedForImpairment": {
        "label": "Financing Receivable, Individually Evaluated for Impairment",
        "description": "The balance of financing receivables that were individually evaluated for impairment.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 132146000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 119593000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            }
          ]
        }
      },
      "FinancingReceivableModificationsNumberOfContracts2": {
        "label": "Financing Receivable, Modifications, Number of Contracts",
        "description": "Number of financing receivables that have been modified by troubled debt restructurings.",
        "units": {
          "loans": [
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 280,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 129,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 426,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 115,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 121,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 249,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 249,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 101,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 101,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 385,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 385,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 104,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 104,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 91,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 150,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 239,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 239,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 115,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 115,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 381,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 381,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 142,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 142,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 172,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 172,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 317,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 317,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 146,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 146,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 462,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 462,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 145,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 145,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 129,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 250,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 121,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 387,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 116,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            }
          ],
          "loan": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 599000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 129,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 250,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 121,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 387,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 116,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 454,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 454,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 454,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 81,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 81,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 171,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 171,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 90,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 90,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 263,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 263,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 93,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 93,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 337,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 337,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 337,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            }
          ]
        }
      },
      "FinancingReceivableModificationsPostModificationRecordedInvestment2": {
        "label": "Financing Receivable, Troubled Debt Restructuring, Postmodification",
        "description": "Amount, after troubled debt restructuring, of modified financing receivable.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 18228000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 7850000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 33174000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 13180000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 11049000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 23947000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 23947000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 13087000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 13087000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 37155000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 37155000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 11807000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 11807000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 5241000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 7990000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 24522000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 24522000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 17374000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 17374000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 35546000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 35546000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 14251000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 14251000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 17977000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 17977000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 54014000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 54014000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 37040000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 37040000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 76497000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 76497000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 25078000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 25078000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 92000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 23032000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 23000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 43652000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 44000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 21557000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 22000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 67710000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 68000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 21919000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 22000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 24000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 24000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 38000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 38000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 100000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 100000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 67000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 67000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 79000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 79000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 79000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            }
          ]
        }
      },
      "FinancingReceivableModificationsRecordedInvestment": {
        "label": "Financing Receivable, Troubled Debt Restructuring",
        "description": "Amount of financing receivable modified as troubled debt restructuring.",
        "units": {
          "USD": [
            {
              "end": "2011-09-30",
              "val": 277699000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 277699000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 277699000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 323061000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 323061000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 323061000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 318323000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 318323000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 308038000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 298495000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2012-09-30",
              "val": 333170000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 333170000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 333170000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 333170000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 333170000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 320642000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-09-30",
              "val": 209745000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 206756000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 206756000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 206756000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 231001000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-12-31",
              "val": 151479000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 151479000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 151479000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 151479000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-06-30",
              "val": 151577000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 145719000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 144843000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 144843000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 144843000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 144843000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 144843000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 141397000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 139306000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 149425000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 150916000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 150916000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 150916000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 150916000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 150916000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 149043000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 150891000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 154382000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 164561000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 164561000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 164561000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 164561000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 164561000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 164561000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 163470000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 161824000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 161971000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 156130000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 156130000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 156130000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 156130000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 156130000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 156130000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 153517000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 164857000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 161312000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 171192000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 171192000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 171192000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 171192000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 171192000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 171192000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 179805000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 201505000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 207130000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 208180000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 208180000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 208180000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 208180000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 208180000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 216946000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 197969000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 212975000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 194548000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 192000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 192000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 192000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 192000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 203000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 203000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 253000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 221000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 221000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 221000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 221000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 221000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 221000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1": {
        "label": "Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts",
        "description": "Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.",
        "units": {
          "loans": [
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 93,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 58,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 155,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 67,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 74,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 129,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 129,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 66,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 66,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 162,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 162,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 50,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 50,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 61,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 66,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 120,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 120,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 62,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 62,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 164,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 164,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 59,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 59,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 60,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 60,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 109,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 43,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 178,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 69,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 46,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            }
          ]
        }
      },
      "FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1": {
        "label": "Financing Receivable, Troubled Debt Restructuring, Subsequent Default",
        "description": "Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 6686000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 3779000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 10493000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 4271000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 5291000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 9182000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 9182000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4354000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4354000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 11472000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 11472000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3766000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3766000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3808000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3904000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 12330000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 12330000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5901000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5901000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13976000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13976000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 4036000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 4036000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 3451000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 3451000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 8896000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 6237000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 17553000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 9410000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 5584000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 8000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 8000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 8000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 4000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            }
          ]
        }
      },
      "FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate": {
        "label": "Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date",
        "description": "Amount of allowance for credit loss at acquisition date of financing receivable purchased with credit deterioration.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1193000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1193000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1193000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1193000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1193000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1193000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1193000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1193000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2022-01-03",
              "end": "2022-03-31",
              "val": 284000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            }
          ]
        }
      },
      "FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium": {
        "label": "Financing Receivable, Purchased with Credit Deterioration, Discount (Premium)",
        "description": "Amount of discount (premium) attributable to other factors on financing receivable purchased with credit deterioration.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1055000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1055000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1055000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1055000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            }
          ]
        }
      },
      "FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing": {
        "label": "Financing Receivable, 90 Days or More Past Due, Still Accruing",
        "description": "Amount of financing receivable 90 days or more past due and still accruing.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 3291000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 27548000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 27548000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 2970000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 3796000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 3587000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 5862000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 5862000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 5862000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 5862000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 5862000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 7377000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 3776000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 5614000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 6925000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 34000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            }
          ]
        }
      },
      "FinancingReceivableRecordedInvestmentCurrent": {
        "label": "Financing Receivable, Not Past Due",
        "description": "Amount of financing receivable not past due.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 12572667000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 12572667000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-09-30",
              "val": 13330648000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 13330648000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 28116245000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 28608726000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 28608726000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 28608726000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 28963308000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 32190121000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 32596025000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 32546490000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 32546490000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 32546490000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 32546490000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 32964932000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 32501878000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 32345815000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "FinancingReceivableRecordedInvestmentNonaccrualStatus": {
        "label": "Financing Receivable, Nonaccrual",
        "description": "Amount of financing receivable on nonaccrual status.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 238838000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 238838000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 41774000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-09-30",
              "val": 351492000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 351492000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 29534000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 29534000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-06-30",
              "val": 81333000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 79782000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 50830000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 79782000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-06-30",
              "val": 61828000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 35857000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 30801000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 30801000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 30801000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 32343000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-12-31",
              "val": 15516000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 114946000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 121689000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 121689000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-01-01",
              "val": 168717000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2020-01-01",
              "val": 168717000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-01-01",
              "val": 168717000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-01-01",
              "val": 168717000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-03-31",
              "val": 174571000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 197791000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 186454000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 191483000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 191483000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 191483000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 191483000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 191483000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 194534000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 187464000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 163775000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 120306000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 121000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 538000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            }
          ]
        }
      },
      "FinancingReceivableRecordedInvestmentPastDue": {
        "label": "Financing Receivable, Past Due",
        "description": "Amount of financing receivable past due.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 584657000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 584657000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-09-30",
              "val": 330623000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 330623000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2012-06-30",
              "val": 308041000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-12-31",
              "val": 333170000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-06-30",
              "val": 277601000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2019-12-31",
              "val": 206535000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 272770000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 272770000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 272770000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 277651000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 228304000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 249119000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 245485000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 245485000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 245485000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 245485000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 215919000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 187774000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 170374000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "FinancingReceivableUnamortizedPurchasePremiumDiscount": {
        "label": "Financing Receivable, Unamortized Purchase Premium (Discount)",
        "description": "Amount of unamortized purchase premium (discount) on financing receivable. Excludes financing receivable covered under loss sharing agreement.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 64727000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 64727000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 64727000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 58150000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 50308000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 45973000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 142000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 138000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 131000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 118000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 118000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 118000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 118000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 118000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 118000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 2674000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 2478000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 2197000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 2036000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2036000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 2036000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 2036000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 2036000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 2036000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 1904000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 1781000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 1688000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 1598000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1598000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 1598000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 1598000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 1598000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 1524000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 1450000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 1383000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1326000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 1326000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1281000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsAccumulatedAmortization": {
        "label": "Finite-Lived Intangible Assets, Accumulated Amortization",
        "description": "Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 7548000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 11934000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 11934000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 15410000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 15410000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 17719000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 17719000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 24674000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 24674000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 43566000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 43566000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 60416000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 60416000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 77610000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 77610000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 94775000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": -94775000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": -111121000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 111121000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 98175000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 98175000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 109123000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year One",
        "description": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 2308000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1122000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 18576000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 16440000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 14556000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 15394000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 14964000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 14165000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 10948000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 7743000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Five",
        "description": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 9457000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 7492000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 5996000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 4288000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 7028000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 5657000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 3189000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1814000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Four",
        "description": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 11701000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 9457000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 7838000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 6799000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 5805000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 5056000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 2658000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1374000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Three",
        "description": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 126000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 13951000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 11710000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 9892000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 9431000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 8706000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 7658000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 5129000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 2659000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo": {
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Two",
        "description": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 1122000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 125000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 16200000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 14075000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 12220000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 12275000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 11729000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 10850000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 7743000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 5129000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsFutureAmortizationExpense": {
        "label": "Finite-Lived Intangible Assets, Future Amortization Expense (Deprecated 2012-01-31)",
        "description": "The aggregate estimated amortization expense for succeeding fiscal years for intangible assets subject to amortization.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsGross": {
        "label": "Finite-Lived Intangible Assets, Gross",
        "description": "Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 17445000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 18966000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 18966000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 18966000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 18966000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 18966000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 18966000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 114596000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 114596000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 115201000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 115201000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 118041000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 118041000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 128761000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 128761000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 143007000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 143007000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 154507000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 154507000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 127842000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 127842000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 127842000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsNet": {
        "label": "Finite-Lived Intangible Assets, Net",
        "description": "Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 9897000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 3556000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 3556000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1247000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 1247000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 89922000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 89922000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 71635000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 71635000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 57625000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 57625000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 51151000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 51151000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 48232000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 48232000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 43386000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 43386000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 29667000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 29667000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 18719000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsUsefulLife": {
        "label": "Finite-Lived Intangible Assets, Useful Life (Deprecated 2012-01-31)",
        "description": "The useful life of all finite-lived intangible assets.",
        "units": {
          "years": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 4,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "ForeclosedRealEstateExpense": {
        "label": "Foreclosed Real Estate Expense",
        "description": "Amount of expense recognized during the period for the foreclosure on real estate assets.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 3658000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 3422000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 1785000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 7291000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 3869000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 15107000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 15107000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 4061000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 8075000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 8075000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 4014000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 4014000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 6804000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 6804000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 6804000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": -1271000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": -1271000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": -1271000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 20439000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 20439000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 20439000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 5488000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 5488000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 9235000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 9235000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 3747000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 3747000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 23793000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 23793000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 23793000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 14558000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 14558000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 14558000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 46133000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 46133000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 46133000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 4621000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 4590000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 20386000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 19993000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 15765000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 15389000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 29053000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 27248000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 8667000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 7255000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 40654000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 40654000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 40654000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4305000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4305000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 7772000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 7772000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 3467000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 3467000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 12059000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 12059000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4287000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4287000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 17134000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 17134000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 17134000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 5410000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 5410000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 9268000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 9268000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 3858000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 3858000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 13787000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 13787000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 4838000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 4838000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17368000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17368000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17368000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 2557000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 2557000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3576000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3576000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1019000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1019000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4663000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4663000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1087000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1087000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2662000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2662000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12311000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1731000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1731000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 615000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 615000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": -1116000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": -1116000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 2631000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 9732000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 2016000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 4039000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4490000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 13379000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 13379000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2471000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3763000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3051000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 6139000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 580000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2376000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 9582000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 9582000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 3443000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 3443000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14407000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14407000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14407000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 4146000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 4146000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8120000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8120000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 3974000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 3974000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 12389000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 12389000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 4269000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 4269000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 16567000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 16567000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 16567000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3022000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3022000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 6681000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 6681000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 3659000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 3659000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 9725000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 9725000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 3044000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 3044000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11994000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11994000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11994000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4054000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4054000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 8003000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 8003000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 3949000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 3949000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10171000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10171000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2168000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2168000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13658000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13658000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2198000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 2371000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 173000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 3207000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 836000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5442000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "FutureAmortizationExpenseAfterYearFive": {
        "label": "Future Amortization Expense, after Year Five (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized for the remainder of the finite-lived intangible asset useful life after the fifth succeeding fiscal year.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearFive": {
        "label": "Future Amortization Expense, Year Five (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year five of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearFour": {
        "label": "Future Amortization Expense, Year Four (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 126000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearOne": {
        "label": "Future Amortization Expense, Year One (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year one of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3476000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearThree": {
        "label": "Future Amortization Expense, Year Three (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1122000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearTwo": {
        "label": "Future Amortization Expense, Year Two (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year two of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2308000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "GainLossOnContractTermination": {
        "label": "Gain (Loss) on Contract Termination",
        "description": "Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2824000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -2824000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -3377000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -3377000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -3377000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -3377000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -3377000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -3377000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -3377000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -45000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -45000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -45000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -45000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -45000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -45000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -45000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "GainLossOnSaleOfBusiness": {
        "label": "Gain (Loss) on Disposition of Business",
        "description": "Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 216000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 216000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 216000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "GainLossOnSaleOfLoansAndLeases": {
        "label": "Gain (Loss) on Sale of Loans and Leases",
        "description": "The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans and leases that were sold during the reporting period. This element refers to the gain (loss) and not to the cash proceeds of the sales. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 3758000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 3758000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 3758000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 3758000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 3758000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 164000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 164000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 164000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 164000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 1007000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 1007000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 800000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1007000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1007000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1007000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 299000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 299000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 299000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "GainLossOnSaleOfMortgageLoans": {
        "label": "Gain (Loss) on Sale of Mortgage Loans",
        "description": "The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 8801000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 8858000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 8858000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 8751000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 8751000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7465000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 300000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            }
          ]
        }
      },
      "GainLossOnSaleOfOtherAssets": {
        "label": "Gain (Loss) on Disposition of Other Assets",
        "description": "Amount of gain (loss) on sale or disposal of other assets.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4085000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4085000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 4085000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 4085000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 4085000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 4085000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 4085000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 4085000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 4085000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            }
          ]
        }
      },
      "GainLossOnSaleOfPropertyPlantEquipment": {
        "label": "Gain (Loss) on Disposition of Property Plant Equipment",
        "description": "Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 156000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 156000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 159000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 159000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 490000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 490000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 524000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 524000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 524000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -991000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1450000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -1480000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -2452000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -2452000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -358000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -716000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -1082000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -4115000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 6000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -5000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "GainLossOnSaleOfSecuritiesNet": {
        "label": "Gain (Loss) on Sale of Securities, Net (Deprecated 2018-01-31)",
        "description": "The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 8128000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -139000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": -139000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -316000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": -177000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -511000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -511000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 1131000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 945000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 945000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": -186000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": -186000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1885000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1885000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 1885000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 940000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 940000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 940000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1952000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1952000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1952000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -449000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -449000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -545000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -545000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": -96000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": -96000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -291000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -291000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -291000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 254000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 254000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 254000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -288000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -288000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -288000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -45000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -45000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -42000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -42000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 3000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 3000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -11000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -11000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 31000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 31000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2277000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2277000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2277000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 58000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29096000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29096000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29096000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5126000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5126000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5273000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5273000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 147000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 147000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10837000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10837000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5564000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5564000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4628000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4628000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 17157000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 17157000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12529000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12529000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17509000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17509000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 352000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 352000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -24000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -24000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3327000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 3351000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4664000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1337000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "GainLossOnSalesOfLoansNet": {
        "label": "Gain (Loss) on Sales of Loans, Net",
        "description": "The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -5862000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -5524000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -7145000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 8801000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -8801000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -1371000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -3371000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -3371000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 6084000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 6084000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -6084000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 8858000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 8858000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -8858000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -2211000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2211000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 3420000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -3420000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 6240000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 6240000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 6240000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 8751000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 8751000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 8751000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3412000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3412000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2858000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2858000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 4033000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 4033000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7465000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7465000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7465000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3560000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3560000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 7123000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 7123000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 9451000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 9451000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10738000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10738000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10738000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 1054000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 1054000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 2220000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 2220000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 3334000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 3334000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 4971000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 4971000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 4971000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3468000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3468000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3991000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3991000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 6079000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 6079000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 11851000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 11851000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 11851000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 2487000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 2487000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 5882000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 5882000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10857000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10857000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 15795000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 15795000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 15795000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3456000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3456000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 6279000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 6279000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 11317000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 11317000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14843000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14843000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14843000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2666000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2666000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5610000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5610000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 8640000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 8640000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 11210000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 11210000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 11210000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2181000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2181000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 6096000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 6395000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 10308000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 10607000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14884000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 15183000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 15183000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5682000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5682000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 15578000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 15578000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 25728000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 25728000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 37594000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 37594000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 38000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9365000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 19766000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 20000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 26789000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 27000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 32719000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 8000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 13000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 16000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 6000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -3000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -3000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 4000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 12000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 21000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 5000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "GainOnPurchaseOfBusiness": {
        "label": "Gain on Purchase of Business (Deprecated 2013-01-31)",
        "description": "Amount of the excess of the fair value of acquired net assets over the cost of an acquired business after pro rata reduction of the amounts that otherwise would have been assigned to acquired assets except financial assets other than investments accounted for by the equity method, assets to be disposed of by sale, deferred tax assets, prepaid assets relating to pension and postretirement benefit plans, and other current assets. This amount is considered an extraordinary item and often referred to as negative goodwill. This element is gross of the related tax effect.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 0,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 0,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 0,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 104434000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 104434000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 104434000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 104434000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 136000000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 136000000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 132623000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 0,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 0,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 136000000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 136000000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 136000000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 136000000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 136000000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 136000000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 65508000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 63474000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 63474000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 64984000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 0,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 150417000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 151262000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 151262000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 86943000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 87788000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 87788000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 150417000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 150417000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "GainsLossesOnExtinguishmentOfDebt": {
        "label": "Gain (Loss) on Extinguishment of Debt",
        "description": "Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 9685000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 9685000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 9685000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1988000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1988000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1988000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1717000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 919000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12483000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 919000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 25814000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 25814000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 25814000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 25814000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 26517000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 26517000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 703000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 703000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 26553000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 26553000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 26553000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 6000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 6000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 7000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 7000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -2000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -2000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -9000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -8000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "GainsLossesOnSalesOfOtherRealEstate": {
        "label": "Gains (Losses) on Sales of Other Real Estate",
        "description": "The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -912000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -2126000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -2808000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -18010000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -15107000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -2809000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -720000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -720000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -1005000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -1005000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -1005000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -15633000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -15633000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 651000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -2074000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -2074000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -1349000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -1349000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -4410000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -4410000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -4410000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -53450000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -53450000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -53450000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1495000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1495000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -453000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -453000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -1757000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -31070000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -36229000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -36229000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -36229000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -1350000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -1350000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -1480000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -1480000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -4574000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -4574000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -6686000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -6686000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -6686000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -3441000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -3441000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -6993000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -6993000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -9770000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -9770000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -14275000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -14275000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -14275000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -1978000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -1978000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -3188000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -3188000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -4355000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -4355000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2168000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2168000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2168000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -2599000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -2599000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -3884000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -3884000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -5251000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -5251000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -6201000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -6201000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -6201000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -1717000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -1717000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -2160000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -2160000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -3152000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -3152000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -4460000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -4460000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -4460000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -1210000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -1210000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -2698000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -2698000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -3156000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -3156000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -4390000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -4390000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -4390000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -427000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -427000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -1417000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -1417000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -1924000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -1924000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -2664000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -2664000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -2664000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -1419000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -1419000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -2475000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -2475000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -2360000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -2360000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -4056000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -4056000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 527000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 2009000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 2971000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1207000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 2000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 2000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 3000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 3000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 6000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 6000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -8000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -8000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -7000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "Goodwill": {
        "label": "Goodwill",
        "description": "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 102625000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 102625000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 102625000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 102625000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 102625000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 102625000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 102625000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 102625000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 102625000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 102625000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 102625000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 102625000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 102625000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 102625000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 102625000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 102625000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 102625000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 102625000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 102625000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 102625000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 102625000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 102625000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 102625000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 102625000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 102625000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 102625000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 102625000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 102625000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 102625000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 102625000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 102625000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 102625000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 102625000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 102625000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 102625000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 102625000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 102625000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 102625000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 102625000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 102625000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 102625000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 102625000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 102625000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 102625000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 102625000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 102625000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 102625000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 102625000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 127140000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 127140000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 127140000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 139773000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 139773000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 139773000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 139773000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 139773000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 139773000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 139773000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 139773000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 139773000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 139773000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 139773000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 139773000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 139773000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 139773000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 139773000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 139773000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 139773000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 150601000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 150601000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 150601000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 150601000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 150601000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 150601000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 150601000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 150601000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 150601000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 150601000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 150601000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 150601000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 150601000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 150601000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 150601000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 150601000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 150601000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 208217000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 208217000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 236347000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 236347000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 236347000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 236347000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 236347000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 236347000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 236347000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 296764000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 296764000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 349398000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 349398000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 349398000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 349398000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 349398000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 349398000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 350084000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 350298000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 350298000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 350298000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 350298000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 350298000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 350298000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 350298000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2020-12-31",
              "val": 350000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 350298000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 350298000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 350298000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 346064000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 346000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 346000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 346000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 346000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 346000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 346000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 346000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 346000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 346000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 346000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 346000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 346000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 346000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 346000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 346000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 346000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 346000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 346000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 346000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 346000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 346000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 346000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 346000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 346000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 346000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 346000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 346000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 346000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 346000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 346000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 346000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "GoodwillAcquiredDuringPeriod": {
        "label": "Goodwill, Acquired During Period",
        "description": "Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 793000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "GoodwillImpairmentLoss": {
        "label": "Goodwill, Impairment Loss",
        "description": "Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "units": {
          "USD": [
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "HeldToMaturitySecurities": {
        "label": "Debt Securities, Held-to-maturity",
        "description": "Amount of investment in debt security measured at amortized cost (held-to-maturity).",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 4140000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 3788000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 3603000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 3603000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 3603000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 3324000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 3084000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 3084000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 2645000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 2645000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 2645000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 2532000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 2532000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 2532000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 2532000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 2532000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 2532000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 2341000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 2341000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 2098000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 2098000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 1943000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 1943000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 1943000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 1822000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1822000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 1822000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 1822000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1822000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 1688000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 1688000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1578000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 1578000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 1459000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 1342000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1342000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 1342000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 1342000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 1342000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 1229000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 1130000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 1013000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 907000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 907000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 907000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 907000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 907000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 782000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 693000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 607000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 518000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 518000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 518000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 518000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 518000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 441000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 351000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 301000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 255000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 255000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 255000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 255000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 255000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 194000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 156000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 125000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 98000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 98000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 98000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 98000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 98000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 83000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 80000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 78000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 76000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 76000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 76000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 76000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 76000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 74000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 2299774000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 2253416000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 2184653000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 2184653000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 2184653000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 2184653000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 2184653000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 2214829000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 2218048000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 2145943000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 740662000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 774878000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 747732000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 2816982000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 2816982000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 2816982000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 2816982000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 2816982000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 2808099000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 3394604000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 3381078000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 3809453000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain": {
        "label": "Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain",
        "description": "Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 17339000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-06-30",
              "val": 67235000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 71857000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2020-03-31",
              "val": 12538000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 16447000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 13555000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 21573000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 21573000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 5204000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 7092000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 5316000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 5722000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 6000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 6000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 6000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 5000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 37000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 17000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 19000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 28000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 32000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 32000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 21000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss": {
        "label": "Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss",
        "description": "Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 490000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2020-03-31",
              "val": 22000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 35000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 56000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 56000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 38321000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 24611000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 33316000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 55525000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 56000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 56000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 56000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 56000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 617000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1020000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1495000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1484000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1484000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1484000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1484000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1484000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1484000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1391000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1549000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1930000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 1476000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1476000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 1476000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 1476000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1476000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 1476000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 1571000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 1594000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 1260000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 1539000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1539000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 1539000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 1539000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 1539000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 1368000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 1320000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 1241000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1188000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 1188000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1203000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses": {
        "label": "Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (Deprecated 2013-01-31)",
        "description": "This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for twelve months or longer for those securities which are categorized as held-to-maturity.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 26000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 26000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 26000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 27000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAggregateLosses": {
        "label": "Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses (Deprecated 2013-01-31)",
        "description": "This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized as held-to-maturity.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 26000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 26000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 26000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 27000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue": {
        "label": "Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value",
        "description": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 26000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 21000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 21000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 17000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses": {
        "label": "Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (Deprecated 2013-01-31)",
        "description": "This item represents the excess of amortized cost basis over fair value of securities that have been in a loss position for less than twelve months for those securities which are categorized as held-to-maturity.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue": {
        "label": "Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value",
        "description": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue": {
        "label": "Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value",
        "description": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 26000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 21000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 21000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 17000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesCurrent": {
        "label": "Debt Securities, Held-to-maturity, Current",
        "description": "Amount of investment in debt security measured at amortized cost (held-to-maturity), classified as current.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 3834000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 2741000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010Q4I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue": {
        "label": "Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10",
        "description": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 3005000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 2689000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 2689000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 2570000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 2570000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 2570000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 2570000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 2368000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 2110000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 2110000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 1940000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 1940000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 1940000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 1820000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1820000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 1820000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 1820000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1820000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 1306000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 1306000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 4000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 4000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 11000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 11000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 11000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 11000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 10000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 6000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-06-30",
              "val": 34550000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 30552000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1351000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1215000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 783000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 663000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 663000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 663000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 663000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 663000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 663000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 593000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 585000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 544000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 533000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 533000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 533000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 533000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 533000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 533000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 529000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 531000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 485000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 468000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 468000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 468000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 468000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 468000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 483000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 345000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 116000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 107000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 107000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount": {
        "label": "Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10",
        "description": "Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 2797000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 2512000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 2512000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 2404000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 2404000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 2404000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 2404000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 2214000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 1973000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 1973000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 1816000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 1816000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 1816000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 1699000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1699000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 1699000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 1699000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1699000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 1201000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 1201000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 4000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 4000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 19000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 18000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 18000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 18000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 18000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 14000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-06-30",
              "val": 34550000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 30552000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1433000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1340000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 930000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 789000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 789000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 789000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 789000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 789000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 789000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 693000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 694000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 670000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 622000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 622000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 622000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 622000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 622000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 622000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 623000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 624000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 545000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 546000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 546000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 546000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 546000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 546000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 547000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 386000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 128000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 119000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 119000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue": {
        "label": "Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five",
        "description": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 151000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 3000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 6000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 6000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 12000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 12000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 12000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 11000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 11000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 11000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 11000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 11000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 393000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 393000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1568000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 1568000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 1440000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 1309000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1309000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 1309000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 1188000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 1074000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 749000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 749000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 749000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 1009000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 749000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 749000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 836000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 863000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1190000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1328000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1328000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1328000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1328000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1328000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1328000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1440000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1426000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1440000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 1508000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1508000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 1508000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 1508000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1508000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 1508000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 1504000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 1514000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 1477000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 1208000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1208000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 1208000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 1208000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 1208000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 1209000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 1352000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 1406000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1360000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 1360000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1388000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount": {
        "label": "Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five",
        "description": "Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 151000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 5000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 8000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 8000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 13000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 13000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 13000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 12000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 12000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 12000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 12000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 12000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 379000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 379000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1470000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 1470000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 1354000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 1242000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1242000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 1242000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 1132000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 1040000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 250000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 749000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 749000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 749000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 749000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 1009000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 749000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 749000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 873000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 920000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1334000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1479000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1479000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1479000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1479000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1479000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1479000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1579000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1581000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1609000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 1636000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1636000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 1636000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 1636000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1636000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 1636000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 1638000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 1641000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 1564000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 1299000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1299000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 1299000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 1299000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 1299000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 1281000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 1429000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 1492000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1434000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 1434000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1473000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue": {
        "label": "Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10",
        "description": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 178000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 175000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 175000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 171000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 171000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 171000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 171000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 166000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 162000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 162000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 156000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 156000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 156000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 149000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 149000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 149000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 149000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 149000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 145000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 145000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 142000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 142000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 132000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 128000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 128000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 128000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 124000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 120000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-06-30",
              "val": 998000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 250000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount": {
        "label": "Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10",
        "description": "Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 136000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 133000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 133000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 128000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 128000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 128000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 128000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 122000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 117000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 117000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 114000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 114000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 114000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 111000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 111000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 111000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 111000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 111000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 108000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 108000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 104000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 104000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 86000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 82000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 82000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 82000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 79000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 76000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-06-30",
              "val": 998000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 250000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue": {
        "label": "Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One",
        "description": "Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 19472000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 2257000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 1507000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 998000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 1258000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 1259000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 2008000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 52000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 51000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 51000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 2000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 26000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 26000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 182000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 419000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 419000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 419000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 419000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 419000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 443000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 463000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 500000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 303000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 303000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 364000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount": {
        "label": "Debt Securities, Held-to-Maturity, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One",
        "description": "Amount of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 30746000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 19472000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 2257000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 1507000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 1507000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 998000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 1258000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 1259000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 2008000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 53000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesFairValue": {
        "label": "Debt Securities, Held-to-maturity, Fair Value",
        "description": "Fair value of investment in debt security measured at amortized cost (held-to-maturity).",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 3334000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-12-31",
              "val": 2741000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 2278000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2018-12-31",
              "val": 2201502000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 2201502000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 2201502000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-06-30",
              "val": 2285283000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 2217800000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 30996000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 753178000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 791325000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 761252000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 2838499000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 2838499000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 2838499000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 2838499000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 2838499000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 2774982000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 3377085000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 3353078000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 3759650000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 3759000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 3759000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 3759000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 3759000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9457000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 8812000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 8166000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 8795000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 8795000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 8795000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 8795000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 8795000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 8795000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 8993000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 8652000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 8152000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 8503000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 8503000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 8503000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 8503000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 8503000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 8503000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 8479000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 8946000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 9168000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 8702000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 8702000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 8702000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 8702000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 8702000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 8973000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 8888000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 8838000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 8491000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 8491000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 8360000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesFairValueDisclosure": {
        "label": "Held-to-maturity Securities, Fair Value Disclosure (Deprecated 2013-01-31)",
        "description": "This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investments in debt securities which are categorized as held-to-maturity and that have scheduled maturities more than one year from the balance sheet date or operating cycle, if longer; such investments are normally measured at amortized cost (carrying value) unless circumstances indicate that the value to be recovered from the investment is less than its carried amount. The held-to-maturity category is for those securities that the Company has the positive intent and ability to hold until maturity.",
        "units": {
          "USD": [
            {
              "end": "2010-09-30",
              "val": 2864000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-09-30",
              "val": 2864000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 2741000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 2741000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 2741000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-03-31",
              "val": 2537000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 2278000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 2108000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 2108000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 2108000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1980000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1980000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1980000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 1980000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 1980000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 1844000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-03-31",
              "val": 1844000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-06-30",
              "val": 1714000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-06-30",
              "val": 1714000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-09-30",
              "val": 1583000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 1448000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1448000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 1448000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-03-31",
              "val": 1322000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 1200000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions": {
        "label": "Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions",
        "description": "Disclosure regarding factors used to determine that the impairment of securities categorized as held-to-maturity where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the held-to-maturity investments determined to be temporarily impaired.",
        "units": {
          "investment": [
            {
              "end": "2018-09-30",
              "val": 2,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 2,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 2,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesUnrecognizedHoldingGains": {
        "label": "Held-to-maturity Securities, Unrecognized Holding Gain (Deprecated 2018-01-31)",
        "description": "Amount of unrecognized gain before loss on investments in held-to-maturity securities.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 276000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            }
          ]
        }
      },
      "HeldToMaturitySecuritiesUnrecognizedHoldingLosses": {
        "label": "Held-to-maturity Securities, Unrecognized Holding Loss (Deprecated 2018-01-31)",
        "description": "Amount of unrecognized loss before gain on investments in held-to-maturity securities. Excludes write-down for other than temporary impairment (OTTI).",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 26000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            }
          ]
        }
      },
      "ImpairedFinancingReceivableAverageRecordedInvestment": {
        "label": "Impaired Financing Receivable, Average Recorded Investment",
        "description": "Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 115362000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 118978000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 118635000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 119034000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 123805000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 116623000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 116623000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 159720000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 159720000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 174687000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 207729000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 152660000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 166518000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 161014000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 153619000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 147704000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            }
          ]
        }
      },
      "ImpairedFinancingReceivableInterestIncomeAccrualMethod": {
        "label": "Impaired Financing Receivable, Interest Income, Accrual Method",
        "description": "Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4308000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4308000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1065000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 1673000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 608000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2267000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2267000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2267000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 594000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 594000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 594000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 787000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 787000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2193000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2193000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 1652000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 1652000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 5885000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 2067000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2123000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 4091000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 1968000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            }
          ]
        }
      },
      "ImpairedFinancingReceivableRecordedInvestment": {
        "label": "Impaired Financing Receivable, Recorded Investment",
        "description": "Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 107779000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 107779000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 107779000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-03-31",
              "val": 123728000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 129188000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 119599000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 119599000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 119599000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 122135000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 122135000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 122135000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 122135000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 122135000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 112030000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-03-31",
              "val": 112030000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-06-30",
              "val": 191890000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-06-30",
              "val": 191890000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-09-30",
              "val": 162252000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 172984000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 172984000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 172984000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-03-31",
              "val": 159591000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 177616000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "ImpairedFinancingReceivableRelatedAllowance": {
        "label": "Impaired Financing Receivable, Related Allowance",
        "description": "Amount of allowance for credit losses related to recorded investment.",
        "units": {
          "USD": [
            {
              "end": "2012-03-31",
              "val": 86117000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2013-03-31",
              "val": 96473000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 76534000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "ImpairedFinancingReceivableUnpaidPrincipalBalance": {
        "label": "Impaired Financing Receivable, Unpaid Principal Balance",
        "description": "Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 108505000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 108505000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 124802000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 129842000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 125078000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 125078000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 125078000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 102000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 129842000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 131731000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 126877000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 126877000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 213109000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 213109000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 180892000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 192238000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 192238000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 174163000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 180890000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-12-31",
              "val": 1833955000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 1727492000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 1888475000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 1754882000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 2057691000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 2057691000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 2092936000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 2092936000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 2025905000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 2025905000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 1788136000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 1788136000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 1693372000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 1693372000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 1665896000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 1665896000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 1614998000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 1614998000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 1475149000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 1475149000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 1266395000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 1266395000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 1266395000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 1155034000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 1155034000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 1199358000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 1199358000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 1293760000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-09-30",
              "val": 1293760000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 1175441000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 1175441000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 1175441000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 1108379000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2018-03-31",
              "val": 1108379000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 1044148000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-06-30",
              "val": 1044148000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 999926000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-09-30",
              "val": 999926000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 960457000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 960457000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 810683000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 805754000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 724745000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 768391000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeCashBasisMethod": {
        "label": "Impaired Financing Receivable, with No Related Allowance, Interest Income, Cash Basis Method",
        "description": "Amount of interest income, recognized on cash basis, on financing receivables, for which there is no related allowance for credit losses and are recognized as impaired.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2175000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1"
            }
          ]
        }
      },
      "ImpairmentOfInvestments": {
        "label": "Other than Temporary Impairment Losses, Investments",
        "description": "The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": {
        "label": "Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest",
        "description": "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 183099000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 260172000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 260172000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 43185000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 43185000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 303562000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 303562000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 99120000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 131685000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 32565000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 264156000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 264156000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 263311000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 132471000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 132471000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 131626000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 310131000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 310131000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 310131000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 53849000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 53849000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 102113000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 102113000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 48264000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 48264000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 161611000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 161611000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 59498000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 59498000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 194170000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 194170000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 197124000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 86646000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 86646000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 155844000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 155844000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 69198000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 69198000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 222485000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 222485000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 66641000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 66641000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 264664000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 268443000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 268443000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 32985000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 34118000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 72344000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 74684000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 39359000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 40566000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 112609000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 116158000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 40265000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 41474000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 203594000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 203594000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 203594000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 101491000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 106960000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 176650000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 176650000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 69690000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 69690000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 265492000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 265492000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 88842000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 88842000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 332414000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 332414000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 332414000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 81488000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 81488000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 191062000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 191062000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 109574000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 109574000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 270012000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 270012000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 78950000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 78950000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 351067000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 351067000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 351067000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 105059000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 105059000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 316938000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 316938000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 211879000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 211879000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 420587000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 420587000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 103649000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 103649000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 543698000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 543698000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 543698000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 131453000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 131453000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 254168000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 254168000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 122715000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 122715000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 387684000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 387684000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 133516000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 133516000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 503610000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 503610000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 503610000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 144728000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 144728000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 300356000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 300356000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 155628000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 155628000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 460520000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 460520000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 160164000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 160164000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 592048000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 592048000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 592048000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 74085000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 74085000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 264650000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 264650000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 190565000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 190565000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 443177000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 443177000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 178527000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 178527000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 617882000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 617882000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 618000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 191349000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 191000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 389917000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 390000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 198568000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 199000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 548050000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 548000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 158133000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 158000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 701661000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 701000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 701000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 701000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 225000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 225000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 562000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 562000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 337000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 337000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 970000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 970000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 408000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 408000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1362000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1362000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1362000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1362000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9471000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9471000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10367000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10367000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 896000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 896000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 11364000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 11364000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 997000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 997000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12077000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12077000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12077000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12077000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1004000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1004000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1983000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1983000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 979000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 979000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2856000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2856000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 873000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 873000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 3592000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 3592000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 651000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 651000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1409000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 758000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2160000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 751000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2971000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 705000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments": {
        "label": "Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest",
        "description": "Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 139604000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 20850000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 8569000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 154216000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 133366000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 183099000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 173105000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 216987000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 213610000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 43882000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 43882000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 260172000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 43185000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2010Q3"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 303562000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 100630000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 133195000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 32565000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            }
          ]
        }
      },
      "IncomeTaxExaminationPenaltiesAndInterestExpense": {
        "label": "Income Tax Examination, Penalties and Interest Expense",
        "description": "The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 114000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -135000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -135000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 467000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 467000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -381000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncomeTaxExpenseBenefit": {
        "label": "Income Tax Expense (Benefit)",
        "description": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 66768000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 110518000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 110518000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 115103000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 115103000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 115103000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 59822000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 59822000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 64729000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 96965000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 101574000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 101574000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 65032000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 65032000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 65032000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 122028000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 122028000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 122028000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 125585000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 125585000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 125585000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 219946000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 219946000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 219946000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 103297000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 103297000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 103297000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 33369000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 69638000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 36269000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 105023000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 35385000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 134677000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 134677000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 134677000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 16916000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 16916000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 53695000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 53695000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 36779000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 13900000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 36779000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 89538000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 89538000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 35843000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 35843000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 126159000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 126159000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 126000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 44033000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 44000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 89813000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 90000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 45780000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 46000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 123873000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 124000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 34060000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 34000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 154202000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 154000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 154000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 154000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -46000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -46000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 36000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 36000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 82000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 82000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 129000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 129000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 93000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 93000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 264000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 264000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 264000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 264000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -47000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -47000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 167000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 167000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 214000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 214000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 412000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 412000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 245000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 245000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 611000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 611000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 611000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 611000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 273000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 273000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 545000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 545000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 272000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 272000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 779000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 779000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 234000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 234000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 815000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 815000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 168000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 168000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 351000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 183000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 534000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 183000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 765000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 171000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "IncomeTaxExpenseBenefitContinuingOperations": {
        "label": "Income Tax Expense (Benefit), Continuing Operations (Deprecated 2013-01-31)",
        "description": "The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 66768000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 110518000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 110518000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 115103000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 115103000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 59822000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability": {
        "label": "Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability",
        "description": "Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25762000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25762000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -15736000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -15736000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            }
          ]
        }
      },
      "IncomeTaxesPaid": {
        "label": "Income Taxes Paid",
        "description": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 69506000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 17516000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 17705000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 20640000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 20640000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 130000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 46041000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 46041000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 126964000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 126964000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 126964000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 187183000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 187183000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 187183000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 9100000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 9100000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 17349000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 17349000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 45825000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 45825000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 45825000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 91465000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 91465000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 91465000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 84000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 84000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 21453000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 21453000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 35208000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 35208000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 66453000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 66453000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 66453000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3364000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3364000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 75917000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 75917000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 99398000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 99398000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 102890000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 102890000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 102890000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2184000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 47962000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 112836000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 127970000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 127970000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 127970000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 136900000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 136900000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 136900000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 108741000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 108741000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 108741000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 88565000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 88565000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 88565000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 73806000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 73806000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 73806000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 83038000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 83038000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 83038000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 116583000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 116583000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 870467000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncomeTaxesPaidNet": {
        "label": "Income Taxes Paid, Net",
        "description": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -592000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 38453000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 117716000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 117000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 11000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 867196000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 867000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 871327000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 871000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 870000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 870000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 870000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -2000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -12000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -12000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -551000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -551000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -551000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -551000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 427000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 427000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 429000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 429000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 514000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 514000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 514000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 514000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 53000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 53000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 703000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 703000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 754000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 754000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 763000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 763000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 40000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 40000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 171000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 289000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 315000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 51000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate": {
        "label": "Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount",
        "description": "The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 64085000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 106247000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 106247000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 108546000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 108546000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 108546000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 67959000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 67959000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 68993000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 92633000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 93956000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 93956000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 71258000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 71258000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 71258000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 116345000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 116345000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 116345000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 122874000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 122874000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 122874000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 190294000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 190294000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 190294000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 105758000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 105758000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 105758000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 124330000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 124330000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 124330000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 129755000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 129755000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 130000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 147349000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 147000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 147000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 147000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2536000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2536000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2536000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2536000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 754000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 754000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 624000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxReconciliationOtherReconcilingItems": {
        "label": "Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -10000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -954000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -954000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1120000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1120000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1120000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -388000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -388000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -1422000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 689000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -634000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -634000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1368000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1368000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1368000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -859000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -859000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -859000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1524000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1524000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1622000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 490000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 490000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 490000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 533000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2510000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2510000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 3405000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 3405000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 3405000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2282000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2282000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -1624000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncomeTaxReconciliationStateAndLocalIncomeTaxes": {
        "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 6984000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 10937000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 10937000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 12084000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 12084000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 12084000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 839000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 839000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 839000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10397000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10397000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10397000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 7319000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 7319000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 7319000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12622000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12622000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12622000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 11372000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 11372000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 11372000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10765000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10765000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10765000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 15081000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 15081000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 15081000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11985000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11985000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11985000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13850000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13850000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 15825000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 16000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 53000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 53000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 53000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 53000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 804000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 804000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 804000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -51000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 118000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 33000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 149000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxReconciliationTaxCredits": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 2735000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4141000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4141000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 5166000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 5166000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 5166000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7279000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7279000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2372000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 5569000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 960000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 960000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2896000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2896000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2896000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 3060000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 3060000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 3060000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4138000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4138000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4138000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4840000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4840000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4840000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2891000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2891000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2891000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4474000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4474000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4474000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 5367000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 5367000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5078000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 20000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 44000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "IncreaseDecreaseInAccruedIncomeTaxesPayable": {
        "label": "Increase (Decrease) in Income Taxes Payable",
        "description": "The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -2673000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -3825000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 5743000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -4426000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -4426000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 24399000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 13899000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 13899000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2260000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2260000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 2260000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -25432000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -25432000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -25432000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 30455000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 30455000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 19774000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 19774000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 52970000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 52970000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 52970000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -2820000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -2820000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -2820000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 22857000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 22857000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 26247000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 26247000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 23051000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 23051000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 29095000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 29095000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 29095000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 31625000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 31625000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -20649000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -20649000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -37737000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -37737000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -79173000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -79173000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -79173000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 40710000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 40710000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5973000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5973000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -24716000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -24716000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 72274000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 72274000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 72274000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 13310000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 15437000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -25261000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -25261000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -26195000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -26195000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -19477000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -19477000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -19477000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 35678000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 35678000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -5757000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -5757000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -16906000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -16906000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -24380000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -24380000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -24380000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 27462000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 27462000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 17404000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 17404000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 17115000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 17115000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -10616000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -10616000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -10616000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 33128000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 33128000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -16609000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -16609000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -21266000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -21266000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23353000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23353000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23353000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 37898000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 37898000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -23826000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -23826000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -33433000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -33433000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -19564000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -19564000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -19564000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 11829000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 11829000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 12122000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 12122000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -38878000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -38878000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -5894000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -5894000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 26703000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -805084000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -774212000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -731741000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncreaseDecreaseInDeferredIncomeTaxes": {
        "label": "Increase (Decrease) in Deferred Income Taxes",
        "description": "The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa.",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-03-31",
              "val": 3456000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q1"
            }
          ]
        }
      },
      "IncreaseDecreaseInDemandDeposits": {
        "label": "Increase (Decrease) in Demand Deposits",
        "description": "The net cash inflow or outflow in the total of all demand deposits, including checking and negotiable order of withdrawal (NOW) accounts, classified as cash flows from financing activities.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 747324000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 698107000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -288922000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 1051869000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 1051869000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 712543000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 655263000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 655263000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1021589000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1021589000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 1021589000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1333159000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1333159000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1333159000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -1060414000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -1060414000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -959739000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -959739000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -665750000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -665750000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -665750000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 4417000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 4417000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 4417000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 488556000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 488556000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 753191000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 753191000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 1072739000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 1072739000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1558512000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1558512000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1558512000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 174277000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 174277000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 322319000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 322319000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 506969000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 506969000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 487046000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 487046000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 487046000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 308876000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 308876000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 270118000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 270118000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 202853000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 202853000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 497692000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 497692000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 497692000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 545807000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 545807000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 926092000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 926092000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1179606000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1179606000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1607487000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1607487000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1607487000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 460086000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 460086000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 421082000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 421082000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 781382000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 917382000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1287856000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1287856000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1287856000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 827009000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 827009000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 429684000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 429684000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 538084000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 538084000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 539120000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 539120000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 539120000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 795034000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 795034000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 704909000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 704909000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 496499000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 496499000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 457196000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 457196000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 457196000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 387319000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 387319000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 762021000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 762021000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 701426000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 701426000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1154815000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1154815000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1154815000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1017371000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1017371000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7649120000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7649120000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 8556808000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 8556808000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9989107000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9989107000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 4058956000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 5246758000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6949598000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 8382531000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncreaseDecreaseInEquitySecuritiesFvNi": {
        "label": "Increase (Decrease) in Equity Securities, FV-NI",
        "description": "Amount of increase (decrease) of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 7610000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 7610000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 7610000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -20625000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -20625000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -20625000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -29395000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -29395000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -34081000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncreaseDecreaseInInterestAndDividendsReceivable": {
        "label": "Increase (Decrease) in Interest and Dividends Receivable",
        "description": "The increase (decrease) during the reporting period in the aggregate amount due to the entity in the form of unpaid interest and dividends.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 7314000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 5803000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 8922000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -17083000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 17083000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -5024000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -8842000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -8842000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 14860000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 14860000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -14860000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 15300000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 15300000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -15300000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -9582000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 9582000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -38043000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 38043000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -46753000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -46753000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -46753000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -48423000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -48423000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -48423000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 10190000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 10190000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 7527000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 7527000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 9349000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 9349000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5450000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5450000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5450000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -411000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -411000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -2099000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -2099000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -1556000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -1556000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 724000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 724000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 724000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 1278000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 1278000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 629000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 629000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 121000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 121000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -6402000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -6402000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -6402000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5911000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5988000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 9475000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 9475000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10114000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10114000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12782000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12782000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12782000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3482000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3482000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1872000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1872000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 2899000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 2899000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 7805000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 7805000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 7805000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 617000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 617000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 290000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 290000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4471000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4471000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 8899000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 8899000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 8899000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1358000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1358000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 1601000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 1601000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 7650000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 7650000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 10785000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 10785000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 10785000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3909000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3909000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1747000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1747000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3567000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3567000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4151000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4151000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4151000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1914000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1914000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 51784000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 51784000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 28025000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 28025000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 21982000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 21982000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2328000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -12651000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -12783000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -11457000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncreaseDecreaseInInterestPayableNet": {
        "label": "Increase (Decrease) in Interest Payable, Net",
        "description": "The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -11365000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 8884000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -8399000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -13042000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -13042000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -4761000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 2771000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 2771000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -4348000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -4348000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -4348000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -877000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -877000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -877000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -9074000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -9074000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -5755000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -5755000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -14851000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -14851000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -14851000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -14340000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -14340000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -14340000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -2233000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -2233000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -626000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -626000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -12574000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -12574000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -14366000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -14366000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -14366000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -2700000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -2700000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -145000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -145000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -3302000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -3302000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -2616000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -2616000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -2616000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -1062000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -1062000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 560000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 560000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -1434000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -1434000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1457000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1457000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1457000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 176000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 176000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -2359000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -2359000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -2244000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -2244000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2481000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2481000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -2481000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 324000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 324000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 624000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 624000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -1662000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -1662000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1916000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1916000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1916000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 150000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 150000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1344000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1344000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 401000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 401000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 155000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 155000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 155000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -2454000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -2454000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -2043000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -2043000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -1552000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -1552000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -240000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -240000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -240000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3457000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3457000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 10485000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 10485000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 14147000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 14147000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14412000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14412000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14412000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -4624000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -4624000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -4012000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -4012000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -7620000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -7620000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -8683000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -8683000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -4264000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -603000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -2855000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -1493000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "IncreaseDecreaseInNotesReceivables": {
        "label": "Increase (Decrease) in Notes Receivables",
        "description": "The increase (decrease) during the reporting period of the amounts due from borrowers for outstanding secured or unsecured loans evidenced by a note.",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-03-31",
              "val": 97291000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q1"
            }
          ]
        }
      },
      "IncreaseDecreaseInOtherOperatingAssets": {
        "label": "Increase (Decrease) in Other Operating Assets",
        "description": "Amount of increase (decrease) in operating assets classified as other.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 6065000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -12174000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 3634000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 50636000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 47733000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -41963000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 46361000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -35462000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -67944000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -67944000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 67944000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 6810000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 6810000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -9474000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -143341000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -143341000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -93818000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -96562000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -123791000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -123791000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -125391000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -89979000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -89979000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -89979000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -23564000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -23564000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -56180000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -56180000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -55930000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -26617000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 17617000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 17617000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 21414000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 6980000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 7038000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -68587000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -68587000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -107757000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -107757000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -103974000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -100437000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -100437000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 8206000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 8891000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 31249000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 32693000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 34872000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 37077000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 72680000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 72680000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 72680000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -19380000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -15223000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -14243000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -14243000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -29225000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -29225000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12904000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12904000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12904000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 19678000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 19678000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 25924000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 25924000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -17120000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -17120000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 27656000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 27873000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 7197000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 15078000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 15078000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 34340000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 34340000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 9566000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 9521000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 46920000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 31978000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 31933000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -342312000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -341678000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -310635000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -313265000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -339289000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -34851000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -304503000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 3961000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5076000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -31072000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -31422000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 13091000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 12375000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -1454000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -2536000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 28097000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 24274000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 24274000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -4067000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -4067000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 17459000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 17459000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 6394000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 6394000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 7286000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 7286000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 135000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -17535000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -42000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -19040000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 773000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -14233000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 747000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 12910000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 733000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 733000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 733000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -365000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -343000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -371000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -358000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -84000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -59000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -484000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -484000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -484000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -484000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 486000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 486000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 70000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 70000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 410000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 410000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -206000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -206000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -206000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -206000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -57000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -57000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 268000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 268000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 169000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 169000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 495000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 495000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -24000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -24000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 241000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 86000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 282000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 103000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "IncreaseDecreaseInOtherOperatingLiabilities": {
        "label": "Increase (Decrease) in Other Operating Liabilities",
        "description": "Amount of increase (decrease) in operating liabilities classified as other.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 11391000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -19332000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -21233000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -28585000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -28585000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 46520000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 46492000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 43115000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 41399000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 41399000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 41399000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 21455000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 21455000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 21455000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -14193000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -14193000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -7836000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -7836000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 696000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 696000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 696000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -1392000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -1541000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -1541000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 6487000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 6487000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4076000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4076000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 5316000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 5316000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 23967000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 23967000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -77590000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 32662000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 32662000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 24346000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 21365000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 56440000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 47692000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56998000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 49177000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 49177000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2186000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 225000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 35033000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 35033000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 27327000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 27327000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1319000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1319000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1319000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -336000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3804000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 25085000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 25085000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 37077000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 37077000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14458000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14458000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 14458000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3857000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3857000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 19718000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 19718000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 56275000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 56275000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -25520000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -25520000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -25520000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 8741000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 8741000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 29647000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 29647000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 10178000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 10178000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -29542000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -25939000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -25939000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -12642000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -12642000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 14998000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 14998000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -53708000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -53708000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -40895000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -40895000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9105000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -51985000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -51985000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -22373000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -22373000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -12416000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -8916000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -19584000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -15992000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -15992000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -28135000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -28135000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -14380000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -14380000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -7472000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -7472000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -6115000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -6115000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -15000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -33494000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -38000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -22724000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -23000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -7692000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -11000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 6854000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 66000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -118000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 266000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -11000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 216000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 216000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 260000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 260000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 260000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 260000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -347000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -347000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -274000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -274000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -130000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -130000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -379000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -379000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -379000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -379000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -409000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -409000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -224000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -224000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -245000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -245000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -34000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -34000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -610000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -610000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -290000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -345000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 170000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -680000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "IncreaseDecreaseInPensionPlanObligations": {
        "label": "Increase (Decrease) in Obligation, Pension Benefits",
        "description": "Amount of increase (decrease) in obligation for pension benefits. Includes, but is not limited to, defined benefit or defined contribution plans. Excludes other postretirement benefits.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -3500000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -100000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -100000000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -100000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -100000000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -100000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            }
          ]
        }
      },
      "IncreaseDecreaseInTimeDeposits": {
        "label": "Increase (Decrease) in Time Deposits",
        "description": "Net cash inflow (outflow) of time deposits.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 37895000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -53721000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 249592000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -1102587000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -1102587000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 85986000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 86680000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 86680000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -323859000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -323859000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -323859000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -743191000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -743191000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -743191000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -367974000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -367974000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -617419000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -617419000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -1517600000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -1517600000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -1517600000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -2273418000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -2273418000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -2273418000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -306338000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -306338000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -528819000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -528819000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -756798000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -756798000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -1049761000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -1049761000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -1049761000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -195381000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -195381000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -390329000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -390329000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -529675000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -529675000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -699005000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -699005000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -699005000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -51268000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -51268000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -219297000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -219297000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -301849000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -301849000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -499869000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -499869000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -499869000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -189906000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -189906000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -359125000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -359125000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -405160000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -405160000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -590773000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -590773000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -590773000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -84802000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -84802000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -250151000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -250151000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -235164000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -371164000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -505548000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -505548000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -505548000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -107339000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -107339000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -238751000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -238751000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -469540000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -469540000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -538250000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -538250000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -538250000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -92064000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -92064000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -181889000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -181889000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -218826000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -218826000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 33023000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 33023000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 33023000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 138640000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 138640000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 291930000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 291930000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 376596000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 376596000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 284611000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 284611000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 284611000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -310224000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -310224000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -623833000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -623833000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -759491000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -759491000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -1010190000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -1010190000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -1010000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -159035000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -159000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -266759000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -267000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -314004000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -314000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -406226000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -406000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -406000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -406000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -833000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -823000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -1676000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -1676000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -1741000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -1741000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 568000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 568000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 568000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 568000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 2124000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 2124000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 5466000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 5466000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 6238000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 6238000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5634000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5634000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5634000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5634000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 585000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 585000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -1261000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -1261000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -2295000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -2295000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -3169000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -3169000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -1257000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -1257000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -2010000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -2178000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -2015000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2007000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InsuranceCommissionsAndFees": {
        "label": "Insurance Commissions and Fees",
        "description": "Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 8277000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 4295000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 1825000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 6221000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 1926000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 8129000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 8129000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 2806000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 4600000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 4600000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 1794000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 1794000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 6580000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 6580000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 6580000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1980000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1980000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1980000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 8650000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 8650000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 8650000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2534000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2534000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 4814000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 4814000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 2280000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 2280000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7010000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7010000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7010000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2196000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2196000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2196000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 9165000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 9165000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 9165000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 2756000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 2756000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4994000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4994000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2238000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2238000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 7562000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 7562000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 2568000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 2568000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9974000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9974000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9974000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2980000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2980000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 5374000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 5374000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 2394000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 2394000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 8146000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 8146000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2772000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2772000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10694000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10694000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 10694000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3287000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3287000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5540000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5540000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 2253000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 2253000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 7962000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 7962000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 2422000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 2422000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11129000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11129000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11129000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3297000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3297000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5753000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5753000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 2456000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 2456000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 8698000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 8698000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 2945000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 2945000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 11757000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 11757000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 11757000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3178000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3178000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 5443000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 5443000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 2265000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 2265000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 8198000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 8198000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 2755000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 2755000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 11150000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 11150000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 11150000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3558000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 3558000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 6121000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2563000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 9015000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 2894000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12465000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12465000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 3776000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 12702000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "IntangibleAssetsNetExcludingGoodwill": {
        "label": "Intangible Assets, Net (Excluding Goodwill)",
        "description": "Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 3035000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 6976000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 6361000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 6361000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 6361000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2009-12-31",
              "val": 6361000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 14522000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 12936000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 12936000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 11373000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 11373000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 11373000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 9897000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 9897000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 9897000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 9897000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 9897000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 9897000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2010-12-31",
              "val": 9897000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 9265000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 9265000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 8234000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 8234000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 8081000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 8081000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 8081000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2011-12-31",
              "val": 7032000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 6076000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 6076000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 5175000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 5175000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 4322000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 3556000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 3556000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 3556000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 3556000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 3556000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2012-12-31",
              "val": 3556000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 2884000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 2266000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 1696000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 1247000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 1247000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 1247000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 1247000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 1247000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 4390000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 3821000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 3291000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 89922000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 106610000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 106610000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 106610000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 106610000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 101904000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 98998000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 95535000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 90986000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 90986000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 90986000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 90986000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 90986000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 84743000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 80555000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 79550000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 78040000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 78040000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 78040000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 78040000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 78040000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 75325000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 80544000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 77491000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 73096000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 73096000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 73096000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 73096000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 73096000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 68668000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 77370000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 72748000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 72298000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 72298000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 72298000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 72298000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 72298000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 67053000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 69575000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 65147000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 68276000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 68276000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 68276000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 68276000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 68276000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 63884000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 58606000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 54170000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 50775000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 50775000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 50775000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 50775000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 50775000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 51547000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 47439000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 44142000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 43085000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 19000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 19000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 19000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 156000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 150000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 145000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 140000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 140000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 140000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 140000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 140000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 140000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 364000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 347000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 329000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 312000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 312000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 312000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 312000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 312000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 312000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 295000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 280000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 265000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 249000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 249000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 249000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 249000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 249000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 234000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 221000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 208000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 195000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 195000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 182000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "InterestAndDividendIncomeOperating": {
        "label": "Interest and Dividend Income, Operating",
        "description": "Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 813351000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 356493000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 176841000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 546183000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 189690000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 738159000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 738159000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 200700000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 418135000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 418135000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 217435000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 217435000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 696763000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 696763000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 696763000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 278628000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 278628000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 278628000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 969368000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 969368000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 969368000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 245200000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 245200000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 490804000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 490804000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 245604000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 245604000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 742983000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 742983000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 742983000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 252179000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 252179000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 252179000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1015159000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1015159000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1015159000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 246752000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 246752000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 487271000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 487271000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 240519000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 240519000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 723945000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 723945000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 236674000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 236674000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1004836000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1004836000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1004836000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 220604000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 220604000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 414530000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 414530000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 193926000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 193926000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 607164000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 607164000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 192634000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 192634000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 796804000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 796804000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 796804000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 173394000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 173394000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 350705000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 350705000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 177311000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 177311000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 528326000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 528326000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 177621000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 177621000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 760448000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 760448000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 760448000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 231510000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 231510000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 477523000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 477523000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 246013000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 246013000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 727348000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 727348000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 249825000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 249825000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 969209000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 969209000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 969209000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 243112000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 243112000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 486481000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 486481000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 243369000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 243369000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 732975000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 732975000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 246494000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 246494000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 987757000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 987757000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 987757000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 260857000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 260857000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 533399000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 533399000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 272542000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 272542000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 817732000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 817732000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 284333000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 284333000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1103690000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1103690000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1103690000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 292601000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 292601000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 596478000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 596478000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 303877000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 303877000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 912184000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 912184000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 315706000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 315706000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1245757000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1245757000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1245757000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 336924000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 336924000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 687645000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 687645000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 350721000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 350721000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1049963000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1049963000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 362318000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 362318000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1404011000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1404011000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1404011000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 369559000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 369559000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 732816000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 732816000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 363257000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 363257000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1107150000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1107150000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 374334000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 374334000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1484026000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1484026000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1484000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 355323000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 355000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 717148000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 717000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 361825000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 362000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1079003000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1080000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 361855000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 363000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1451010000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1451000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1451000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1451000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 710000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 710000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1467000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1467000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 757000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 757000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2373000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2373000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 906000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 906000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3413000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3413000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3413000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3413000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1211000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1211000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 4164000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 4164000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 2953000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 2953000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 7274000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 7274000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 3110000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 3110000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 10391000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 10391000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 10391000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 10391000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3084000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3084000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 6214000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 6214000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 3130000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 3130000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 9352000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 9352000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 3138000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 3138000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 12353000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 12353000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2895000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2895000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 5840000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 2945000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 8838000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 2998000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 11778000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2786000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestAndDividendIncomeSecurities": {
        "label": "Interest and Dividend Income, Securities, Operating",
        "description": "Amount of operating dividend and interest income, including amortization and accretion of premiums and discounts, on securities.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 122747000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 44043000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 21200000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 62927000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 18884000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 77891000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 77891000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 13152000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 27501000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 27501000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 14348000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 14348000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 40738000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 40738000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 40738000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 13237000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 13237000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 13237000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 52477000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 52477000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 52477000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 13358000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 13358000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 24915000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 24915000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 11557000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 11557000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 36250000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 36250000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 36250000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 11335000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 11335000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 11335000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 46028000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 46028000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 46028000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 8302000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 8302000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 16467000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 16467000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 8165000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 8165000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 25902000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 25902000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 9435000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 9435000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 35497000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 35497000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 35497000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 8484000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 8484000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 16603000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 16603000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 8119000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 8119000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 26299000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 26299000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 9696000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 9696000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 36884000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 36884000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 36884000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 11748000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 11748000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 24195000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 24195000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 12447000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 12447000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 36902000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 36902000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 12707000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 12707000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 56211000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 56211000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 56211000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 19310000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 19310000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 41116000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 41116000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 21806000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 21806000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 65136000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 65136000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 24020000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 24020000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 88250000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 88250000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 88250000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 23042000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 23042000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 47744000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 47744000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 24702000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 24702000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 71139000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 71139000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 23395000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 23395000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 96751000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 96751000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 96751000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 29751000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 29751000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 60157000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 60157000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 30406000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 30406000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 89863000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 89863000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 29706000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 29706000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 121207000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 121207000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 121207000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 35020000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 35020000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 72199000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 72199000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 37179000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 37179000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 110969000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 110969000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 38770000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 38770000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 150709000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 150709000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 150709000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 39605000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 39605000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 79821000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 79821000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 40209000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 40209000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 119976000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 119976000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 40155000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 40155000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 160460000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 160460000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 160460000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 39493000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 39493000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 76098000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 76098000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 36605000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 36605000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 113293000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 113293000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 37195000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 37195000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 144459000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 144459000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 30852000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 66284000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 35432000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 105530000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 39246000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 145200000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "InterestAndDividendIncomeSecuritiesOther": {
        "label": "Interest and Dividend Income, Securities, Operating, Other",
        "description": "Amount of other operating dividend and interest income, including amortization and accretion of premiums and discounts, on securities.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 962000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 371000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 164000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 613000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 242000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 1085000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 1085000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 70000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 82000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 82000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 12000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 12000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 159000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 159000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 159000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 77000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 77000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 77000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 227000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 227000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 227000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 259000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 259000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 459000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 459000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 200000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 200000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 480000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 480000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 480000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 21000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 21000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 21000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 548000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 548000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 548000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 131000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 131000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 193000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 193000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 62000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 62000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 301000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 301000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 108000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 108000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 340000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 340000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2914000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 77000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 153000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 76000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 231000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 78000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 320000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 320000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 320000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 640000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 640000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 385000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 206000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 206000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 239000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 911000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 912000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 698000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "InterestAndFeeIncomeLoansAndLeases": {
        "label": "Interest and Fee Income, Loans and Leases",
        "description": "The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 681849000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 312033000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 155449000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 482723000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 170690000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 659537000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 659537000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 187074000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 389615000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 389615000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 202541000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 202541000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 654434000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 654434000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 654434000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 264819000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 264819000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 264819000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 914545000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 914545000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 914545000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 231453000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 231453000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 465184000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 465184000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 233731000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 233731000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 705677000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 705677000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 705677000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 240493000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 240493000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 240493000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 967737000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 967737000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 967737000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 238137000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 238137000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 470001000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 470001000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 231864000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 231864000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 696813000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 696813000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 226812000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 226812000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 967601000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 967601000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 967601000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 211763000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 211763000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 396914000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 396914000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 185151000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 185151000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 579115000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 579115000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 182201000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 182201000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 757197000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 757197000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 757197000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 161034000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 161034000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 325142000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 325142000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 164108000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 164108000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 489401000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 489401000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 164259000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 164259000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 700525000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 700525000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 700525000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 210862000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 210862000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 433544000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 433544000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 222682000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 222682000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 658175000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 658175000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 224631000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 224631000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 874892000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 874892000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 874892000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 216404000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 216404000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 431846000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 431846000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 215442000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 215442000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 651160000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 651160000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 219314000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 219314000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 876472000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 876472000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 876472000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 226630000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 226630000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 462362000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 462362000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 235732000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 235732000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 708622000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 708622000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 246260000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 246260000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 955637000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 955637000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 955637000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 251982000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 251982000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 513068000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 513068000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 261086000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 261086000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 785283000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 785283000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 272215000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 272215000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1073051000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1073051000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1073051000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 290922000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 290922000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 594155000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 594155000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 303233000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 303233000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 909167000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 909167000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 315012000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 315012000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1217306000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1217306000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1217306000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 325548000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 325548000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 651647000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 651647000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 326099000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 326099000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 988029000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 988029000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 336382000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 336382000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1332720000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1332720000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1333000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 323023000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 323000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 647311000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 647000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 324288000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 324000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 966525000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 967000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 319214000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 320000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1294813000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1295000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1295000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1295000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 621000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 621000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1276000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1276000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 655000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 655000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2061000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2061000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 785000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 785000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2953000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2953000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2953000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2953000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1017000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1017000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 3370000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 3370000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 2353000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 2353000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 5796000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 5796000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 2426000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 2426000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 8187000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 8187000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 8187000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 8187000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2354000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2354000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 4776000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 4776000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 2422000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 2422000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7206000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7206000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 2430000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 2430000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 9528000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 9528000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2236000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2236000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 4506000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 2270000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 6806000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 2300000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 9096000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2206000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestBearingDepositLiabilities": {
        "label": "Interest-bearing Deposit Liabilities",
        "description": "The aggregate of all domestic and foreign interest-bearing deposit liabilities.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 11383655000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 12086968000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 12122153000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 12122153000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 12122153000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 14081205000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 14056920000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 14056920000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 13883639000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 13883639000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 13883639000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 13658900000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 13658900000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 13658900000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 13658900000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 13658900000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 13658900000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 13647287000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 13647287000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 13496080000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 13496080000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 13388330000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 13388330000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 13388330000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 13245568000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 13245568000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 13245568000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 13245568000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 13245568000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 13187192000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 13187192000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 13040277000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 13040277000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 12997627000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 13200325000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 13200325000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 13200325000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 13200325000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 13200325000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 13149883000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 12866637000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 12740268000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 12632249000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 12632249000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 12632249000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 12632249000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 12632249000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 13135677000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 12781436000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 12562155000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 17591793000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 17591793000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 17591793000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 17591793000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 17591793000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 17816638000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 17541840000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 17547846000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 17656285000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 17656285000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 17656285000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 17656285000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 17656285000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 17703804000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 17477848000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 17679579000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 18030794000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 18030794000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 18030794000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 18030794000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 18030794000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 18205155000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 18280757000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 17850916000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 18028900000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 18028900000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 18028900000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 18028900000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 18028900000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 17968504000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 18227167000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 17951393000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 18789790000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 18789790000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 18789790000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 18789790000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 18789790000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 18821180000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 19769277000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 19776387000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 21504440000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 21504440000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 21504440000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 21504440000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 21504440000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 21657967000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 23329779000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 24016045000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 25417580000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 25417580000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 25417580000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 25417580000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 25417580000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 26815855000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 27436485000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 28551355000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 30001286000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 30001000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 30001000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 30001000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 30001000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 65699000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 62684000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 60966000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 64486000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 64486000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 64486000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 64486000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 64486000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 64486000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 85401000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 96617000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 103092000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 106055000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 106055000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 106055000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 106055000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 106055000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 106055000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 110333000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 111063000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 112178000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 116596000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 116596000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 116596000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 116596000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 116596000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 118558000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 119056000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 120438000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 120925000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 120925000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 127236000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "InterestBearingDepositsInBanks": {
        "label": "Interest-bearing Deposits in Banks and Other Financial Institutions",
        "description": "For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 4347336000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 9875063000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 9115000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 9115000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 9115000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 9115000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9285000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 6476000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 6172000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 5025000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 5025000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 5025000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 5025000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 5025000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 5025000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 38522000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 37846000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 36704000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 33609000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 33609000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 33609000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 33609000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 33609000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 33609000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 30792000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 25361000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 25640000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 21364000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 21364000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 21364000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 21364000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 21364000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 24692000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 26184000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 24798000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 19801000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 19801000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 23189000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "InterestBearingDomesticDepositChecking": {
        "label": "Interest-bearing Domestic Deposit, Checking",
        "description": "Amount of interest-bearing domestic checking deposit liabilities.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 1870636000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 2103298000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 2103298000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 2363317000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 2363317000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 2445972000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 2445972000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 4560565000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 4091333000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 4445353000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 4445353000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 4919727000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 4919727000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 5230060000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 5230060000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 5338511000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 5338511000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 5782967000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 8284302000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 10591687000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 10591687000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 12694389000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 12694000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 12694000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 12694000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 12694000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 16702000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 16285000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 16118000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 16202000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 16202000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 16202000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 16202000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 16202000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 16202000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 23743000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 24809000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 23461000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 23754000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 23754000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 23754000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 23754000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 23754000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 23754000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 24244000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 23907000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 23216000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 25343000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 25343000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 24377000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "InterestExpense": {
        "label": "Interest Expense",
        "description": "Amount of the cost of borrowed funds accounted for as interest expense.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 314945000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 123656000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 59809000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 178069000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 54413000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 227644000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 227644000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 49664000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 102237000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 102237000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 52573000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 52573000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 150925000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 150925000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 150925000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 48688000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 48688000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 48688000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 195125000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 195125000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 195125000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 41213000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 41213000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 79442000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 79442000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 38229000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 38229000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 114434000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 114434000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 114434000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 34992000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 34992000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 34992000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 144192000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 144192000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 144192000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 25800000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 25800000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 50887000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 50887000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 25087000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 25087000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 72205000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 72205000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 21318000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 21318000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 90148000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 90148000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 90148000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 15722000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 15722000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 30120000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 30120000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 14398000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 14398000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 43571000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 43571000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 13451000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 13451000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56618000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56618000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56618000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 12463000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 12463000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 24076000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 24076000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 11613000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 11613000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 35475000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 35475000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 11399000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 11399000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 50351000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 50351000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 50351000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 11345000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 11345000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 22708000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 22708000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 11363000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 11363000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 33162000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 33162000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 10454000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 10454000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 44304000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 44304000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 44304000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 10392000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 10392000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 21572000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 21572000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 11180000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 11180000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 32217000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 32217000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 10645000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 10645000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 43082000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 43082000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 43082000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 10514000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 10514000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 21447000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 21447000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 10933000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 10933000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 32605000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 32605000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 11158000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 11158000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 43794000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 43794000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 43794000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 8164000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 8164000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 15822000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 15822000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 7658000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 7658000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 24166000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 24166000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 8344000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 8344000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 36857000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 36857000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 36857000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 16452000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 16452000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 39825000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 39825000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 23373000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 23373000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 65718000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 65718000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 25893000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 25893000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 92642000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 92642000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 92642000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 31159000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 31159000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 57022000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 57022000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 25863000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 25863000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 77697000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 77697000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 20675000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 20675000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 95857000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 95857000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 96000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 15671000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 15000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 31103000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 31000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15432000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 16000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 46071000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 47000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 14968000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 16000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 60676000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 61000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 61000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 61000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 61000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 61000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 118000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 118000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 57000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 57000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 229000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 229000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 111000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 111000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 467000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 467000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 467000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 361000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 361000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1353000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 992000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2473000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1120000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3679000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3679000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1267000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            }
          ]
        }
      },
      "InterestExpenseDeposits": {
        "label": "Interest Expense, Deposits",
        "description": "Aggregate amount of interest expense on all deposits.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 263538000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 101836000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 48890000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 145410000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 43574000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 183759000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 183759000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 38116000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 79207000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 79207000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 41091000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 41091000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 116294000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 116294000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 116294000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 37087000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 37087000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 37087000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 149195000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 149195000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 149195000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 29820000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 29820000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 56901000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 56901000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 27081000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 27081000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 81726000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 81726000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 81726000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 24825000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 24825000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 24825000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 101888000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 101888000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 101888000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 16472000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 16472000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 31519000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 31519000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 15047000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 15047000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 45369000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 45369000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 13850000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 13850000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 57568000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 57568000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 57568000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 10313000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 10313000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 19310000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 19310000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 8997000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 8997000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 27233000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 27233000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 7923000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 7923000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 34495000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 34495000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 34495000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 6825000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 6825000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 12831000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 12831000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 6006000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 6006000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 18534000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 18534000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 5703000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 5703000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 24786000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 24786000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 24786000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5629000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5629000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 11163000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 11163000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 5534000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 5534000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 16379000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 16379000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5216000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5216000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 21230000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 21230000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 21230000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4659000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4659000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 9260000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 9260000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4601000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4601000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 13717000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 13717000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 4457000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 4457000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 18169000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 18169000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 18169000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 4436000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 4436000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 8568000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 8568000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 4132000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 4132000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 12407000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 12407000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 3839000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 3839000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 16196000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 16196000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 16196000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 3756000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 3756000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8277000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8277000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4521000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4521000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 13424000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 13424000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 5147000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 5147000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 22483000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 22483000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 22483000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 12926000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 12926000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 32084000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 32084000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 19158000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 19158000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 53821000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 53821000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 21737000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 21737000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 76254000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 76254000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 76254000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 24194000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 24194000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 42110000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 42110000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 17916000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 17916000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 55578000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 55578000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 13468000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 13468000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 66635000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 66635000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 67000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 8793000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 17335000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 8542000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 25408000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 25000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8073000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33240000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 39000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 39000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 81000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 81000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 159000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 159000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 78000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 78000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 335000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 335000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 335000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 335000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 288000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 288000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 863000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 863000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 575000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 575000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1632000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1632000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 769000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 769000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2497000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2497000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2497000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2497000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 928000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 928000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1903000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1903000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 975000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 975000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2907000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2907000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1004000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1004000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 3864000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 3864000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 893000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 893000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1787000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 894000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2698000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 911000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3559000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 833000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm": {
        "label": "Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-term",
        "description": "Interest expense incurred during the reporting period on long-term borrowings associated with Federal Home Loan Bank and Federal Reserve Bank advances.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 19915000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5801000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5801000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1285000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2871000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 1586000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 4187000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1316000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 5472000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 5472000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 5472000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2984000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2984000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 5456000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 5456000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2472000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2472000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 7612000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 7612000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2156000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2156000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9763000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9763000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2087000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4186000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2099000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6300000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 2114000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 8410000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm": {
        "label": "Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-term",
        "description": "Interest expense incurred during the reporting period on short-term borrowings associated with Federal Home Loan Bank and Federal Reserve Bank advances.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2384000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 3236000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 852000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4335000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1099000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1285000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2871000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 1586000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 4187000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1316000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            }
          ]
        }
      },
      "InterestExpenseLongTermDebt": {
        "label": "Interest Expense, Long-term Debt",
        "description": "Aggregate amount of interest paid or due on all long-term debt.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 33905000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 19218000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 9638000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 29077000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 9859000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 39003000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 39003000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 10792000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 21634000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 21634000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 10842000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 10842000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 32493000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 32493000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 32493000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 10859000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 10859000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 10859000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 40741000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 40741000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 40741000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 9696000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 9696000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 19362000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 19362000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 9666000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 9666000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 28059000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 28059000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 28059000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 8697000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 8697000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 8697000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 36311000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 36311000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 36311000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 7937000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 7937000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 16393000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 16393000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 8456000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 8456000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 22747000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 22747000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 6354000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 6354000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 27473000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 27473000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 27473000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4705000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4705000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 9426000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 9426000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 4721000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 4721000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 14210000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 14210000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4784000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4784000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 19399000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 19399000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 19399000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 5053000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 5053000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 9109000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 9109000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 4056000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 4056000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 12111000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 12111000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 3002000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 3002000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 16388000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 16388000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 16388000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3782000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3782000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 7953000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 7953000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4171000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 4171000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 12601000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 12601000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 4648000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 4648000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18414000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18414000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18414000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 5299000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 5299000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 11424000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 11424000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 6125000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 6125000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17072000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17072000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 5648000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 5648000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 22948000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 22948000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 22948000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5498000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5498000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 11123000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 11123000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 5625000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 5625000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 17013000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 17013000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 5890000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 5890000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22760000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22760000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2974000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 179000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5290000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 438000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 2316000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 259000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 7802000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 577000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 2512000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 139000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 10717000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 110000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 272000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 162000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 796000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 524000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            }
          ]
        }
      },
      "InterestExpenseOther": {
        "label": "Interest Expense, Other",
        "description": "Amount of interest expense classified as other.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 703000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 702000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 702000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 110000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 272000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 162000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 796000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 524000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1822000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1822000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1822000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 784000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 784000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1183000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1183000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 399000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 399000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1488000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1488000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 305000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 305000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1775000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1775000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 265000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 519000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 254000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 768000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 249000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1005000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase": {
        "label": "Interest Expense, Securities Sold under Agreements to Repurchase",
        "description": "Gross expenses on securities sold coupled with an agreement to repurchase the same from the same counterparty at a fixed or determinable price within a fixed or variable time period.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1767000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1594000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1594000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 459000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 974000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 515000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1516000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 542000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1995000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1995000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1995000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 442000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 442000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 841000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 841000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 399000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 399000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1236000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1236000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 395000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 395000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1610000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1610000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 338000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 694000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 356000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1052000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 358000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1312000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "InterestExpenseShortTermBorrowings": {
        "label": "Interest Expense, Short-term Borrowings",
        "description": "The aggregate interest expense incurred on short-term borrowings including commercial paper and Federal funds purchased and securities sold under agreements to repurchase.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 17502000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 2602000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 1281000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 3582000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 980000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 4882000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 4882000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 756000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 1396000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 1396000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 640000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 640000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2138000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2138000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 2138000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 742000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 742000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 742000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 5189000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 5189000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 5189000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1697000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1697000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 3179000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 3179000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 1482000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 1482000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 4649000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 4649000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 4649000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1470000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1470000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1470000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 5993000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 5993000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 5993000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1391000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1391000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2975000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2975000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 1584000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 1584000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 4089000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 4089000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 1114000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 1114000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5107000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5107000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5107000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 704000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 704000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 1384000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 1384000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 680000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 680000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 2128000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 2128000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 744000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 744000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2724000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2724000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2724000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 585000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 585000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 2136000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 2136000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 1551000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 1551000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 4830000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 4830000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 2694000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 2694000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 9177000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 9177000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 9177000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1934000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1934000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3592000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3592000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1658000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1658000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4182000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4182000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 590000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 590000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4660000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4660000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4660000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 434000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 434000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 888000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 888000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 454000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 454000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1428000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1428000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 540000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 540000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1965000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1965000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1965000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 580000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 580000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1756000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1756000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1176000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1176000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 3185000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 3185000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1429000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1429000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4838000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4838000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1434000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 404000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2255000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 777000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 821000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 373000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 2940000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1175000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 685000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 398000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 3657000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 459000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 974000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 515000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1516000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 542000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            }
          ]
        }
      },
      "InterestExpenseSubordinatedNotesAndDebentures": {
        "label": "Interest Expense, Subordinated Notes and Debentures",
        "description": "Interest expense incurred during the reporting period on subordinated notes and debentures. Includes amortization of expenses incurred in the issuance of subordinated notes and debentures.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 5213000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1441000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 3094000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 1653000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4655000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1561000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6277000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6277000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1672000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 1672000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 3624000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 3624000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 1952000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 1952000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 5398000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 5398000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1774000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1774000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7099000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7099000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7099000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2755000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2755000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7432000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7432000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4677000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4677000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 11783000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 11783000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4351000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4351000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 16074000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 16074000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 4188000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 8369000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 4181000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 12543000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 4174000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 16709000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "InterestIncomeDepositsWithFinancialInstitutions": {
        "label": "Interest Income, Deposits with Financial Institutions",
        "description": "Interest income derived from funds deposited with both domestic and foreign financial institutions including funds in money market and other accounts.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 8755000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 417000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 192000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 533000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 116000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 731000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 731000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 474000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 1019000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 1019000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 546000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 546000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1591000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1591000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 1591000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 572000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 572000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 572000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2346000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2346000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 2346000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 389000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 389000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 705000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 705000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 316000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 316000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1056000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1056000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1056000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 351000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 351000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 351000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1394000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1394000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1394000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 313000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 313000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 803000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 803000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 490000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 490000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 1230000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 1230000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 427000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 427000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1738000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1738000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1738000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 357000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 357000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 1013000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 1013000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 656000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 656000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1750000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1750000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 737000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 737000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2723000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2723000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2723000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 612000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 612000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1368000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1368000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 756000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 756000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 2023000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 2023000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 655000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 655000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 3712000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 3712000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 3712000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1338000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1338000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2863000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2863000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1525000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1525000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4037000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4037000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1174000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1174000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6067000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6067000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6067000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3666000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3666000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 6891000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 6891000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 3225000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 3225000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10676000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10676000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 3785000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 3785000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14534000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14534000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14534000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 4476000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 4476000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 10880000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 10880000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 6404000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 6404000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 19247000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 19247000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 8367000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 8367000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 26846000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 26846000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 26846000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 5599000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 5599000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11211000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11211000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 5612000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 5612000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 15932000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 15932000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 4721000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 4721000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 21997000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 21997000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 21997000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 6397000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 6397000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 13669000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 13669000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 7279000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 7279000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 20820000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 20820000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 7151000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 7151000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 26245000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 26245000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 26245000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4518000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4518000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 5071000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 5071000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 553000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 553000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 5828000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 5828000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 757000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 757000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 6847000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 6847000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1448000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 3553000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2105000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6948000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3395000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 10997000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            }
          ]
        }
      },
      "InterestIncomeExpenseAfterProvisionForLoanLoss": {
        "label": "Interest Income (Expense), after Provision for Loan Loss",
        "description": "Amount of interest income or expense, including any amortization and accretion (as applicable) of discounts and premiums, including consideration of the provisions for loan, lease, credit, and other related losses.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 432480000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 193355000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 96273000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 310367000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 117012000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 431151000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 431151000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 134106000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 267142000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 267142000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 133036000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 133036000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 437209000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 437209000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 437209000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 170067000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 170067000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 170067000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 630724000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 630724000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 630724000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 159568000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 159568000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 312966000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 312966000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 153398000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 153398000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 485525000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 485525000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 485525000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 172559000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 172559000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 172559000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 638690000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 638690000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 638690000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 190237000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 190237000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 376002000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 376002000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 185765000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 185765000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 573735000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 573735000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 197733000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 197733000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 771803000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 771803000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 771803000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 223488000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 223488000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 416258000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 416258000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 192770000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 192770000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 603124000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 603124000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 186866000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 186866000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 772441000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 772441000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 772441000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 162834000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 162834000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 335831000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 335831000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 172997000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 172997000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 500516000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 500516000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 164685000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 164685000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 709457000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 709457000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 709457000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 214373000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 214373000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 441304000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 441304000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 226931000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 226931000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 680568000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 680568000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 239264000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 239264000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 904241000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 904241000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 904241000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 227877000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 227877000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 455504000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 455504000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 227627000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 227627000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 683846000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 683846000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 228342000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 228342000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 911734000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 911734000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 911734000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 242112000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 242112000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 491397000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 491397000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 249285000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 249285000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 756626000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 756626000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 265229000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 265229000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1034204000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1034204000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1034204000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 276832000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 276832000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 564613000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 564613000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 287781000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 287781000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 871135000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 871135000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 306522000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 306522000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1180432000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1180432000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1180432000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 308722000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 308722000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 630872000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 630872000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 322150000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 322150000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 960531000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 960531000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 329659000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 329659000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1279928000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1279928000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1279928000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 310045000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 310045000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 626887000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 626887000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 316842000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 316842000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 976504000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 976504000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 349617000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 349617000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1329817000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1329817000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1330000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 350626000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 351000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 716622000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 717000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 365996000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 366000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1064629000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1065000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 348007000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 348000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1427169000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1427000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 185000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 185000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 843000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 843000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 658000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 658000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1578000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 735000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2301000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 67000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1877000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 1810000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2"
            }
          ]
        }
      },
      "InterestIncomeExpenseNet": {
        "label": "Interest Income (Expense), Net",
        "description": "The net amount of operating interest income (expense).",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 498406000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 232837000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 117032000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 368114000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 135277000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 510515000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 510515000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 151036000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 315898000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 315898000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 164862000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 164862000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 545838000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 545838000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 545838000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 229940000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 229940000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 229940000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 774243000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 774243000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 774243000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 203987000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 203987000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 411362000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 411362000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 207375000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 207375000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 628549000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 628549000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 628549000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 217187000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 217187000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 217187000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 870967000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 870967000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 870967000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 220952000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 220952000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 436384000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 436384000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 215432000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 215432000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 651740000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 651740000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 215356000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 215356000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 914688000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 914688000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 914688000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 204882000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 204882000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 384410000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 384410000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 179528000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 179528000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 563593000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 563593000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 179183000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 179183000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 740186000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 740186000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 740186000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 160931000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 160931000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 326629000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 326629000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 165698000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 165698000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 492851000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 492851000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 166222000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 166222000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 710097000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 710097000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 710097000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 220165000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 220165000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 454815000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 454815000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 234650000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 234650000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 694186000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 694186000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 239371000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 239371000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 924905000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 924905000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 924905000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 232720000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 232720000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 464909000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 464909000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 232189000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 232189000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 700758000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 700758000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 235849000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 235849000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 944675000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 944675000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 944675000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 250343000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 250343000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 511952000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 511952000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 261609000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 261609000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 785127000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 785127000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 273175000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 273175000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1059896000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1059896000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1059896000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 284437000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 284437000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 580656000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 580656000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 296219000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 296219000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 888018000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 888018000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 307362000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 307362000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1208900000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1208900000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1208900000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 320472000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 320472000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 647820000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 647820000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 327348000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 327348000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 984245000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 984245000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 336425000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 336425000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1311369000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1311369000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1311369000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 338400000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 338400000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 675794000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 675794000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 337394000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 337394000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1029453000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1029453000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 353659000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 353659000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1388169000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1388169000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1388000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 339652000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 340000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 686045000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 686000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 346393000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 346000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1032932000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1033000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 346887000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 347000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1390334000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1390000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1390000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1390000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 649000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 649000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1349000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1349000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 700000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 700000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2144000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2144000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 795000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 795000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2946000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2946000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2946000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2946000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 850000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 850000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 2811000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 2811000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 1961000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 1961000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 4801000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 4801000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1990000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1990000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 6712000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 6712000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 6712000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 6712000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1817000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1817000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3638000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3638000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1821000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1821000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 5434000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 5434000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1796000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1796000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7143000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7143000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1663000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1663000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 3358000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 1695000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 5092000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 1734000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 6814000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1621000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestIncomeSecuritiesCorporateDebtOperating": {
        "label": "Interest Income, Securities, Corporate Debt, Operating",
        "description": "Amount of operating interest income, including amortization and accretion of premiums and discounts, on corporate debt securities.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 7975000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 2319000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 278000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2574000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 255000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1783000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1783000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3877000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "InterestIncomeSecuritiesMortgageBacked": {
        "label": "Interest Income, Securities, Mortgage Backed",
        "description": "Amount of operating interest income, including amortization and accretion of premiums and discounts, on securitized, pass-through debt securities collateralized by real estate mortgage loans.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 4311000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 2382000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 1234000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 3711000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 1329000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 4812000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 4812000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 1564000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 3437000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 3437000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 1873000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 1873000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 4981000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 4981000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 4981000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1544000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1544000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 1544000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 6544000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 6544000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 6544000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2653000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2653000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 4757000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 4757000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 2104000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 2104000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7123000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7123000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7123000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2366000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2366000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 2366000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 9235000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 9235000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 9235000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1889000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1889000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4091000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4091000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2202000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2202000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 8883000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 8883000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 4792000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 4792000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14388000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14388000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 14388000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4579000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 9085000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 4506000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 15500000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 6415000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 22642000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 22642000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 22642000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 36492000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 36492000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 36492000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 65815000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 65815000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 65815000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 79336000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 79336000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 98341000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "InterestIncomeSecuritiesOtherUSGovernment": {
        "label": "Interest Income, Securities, Other US Government",
        "description": "Interest income on securities issued by US government agencies not including US Treasury Securities.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 21908000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 5255000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 3323000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 8887000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 8887000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 3632000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 3632000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12341000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12341000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 5047000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 9910000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 9910000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 4863000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 4863000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 15072000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 15072000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 15072000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 5162000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 5162000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 5162000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 19848000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 19848000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 19848000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 4332000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 4332000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 8709000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 8709000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 4377000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 4377000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 12401000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 12401000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 3692000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 3692000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 15688000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 15688000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 15688000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3326000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 6394000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 3068000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 9203000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2809000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 12265000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 12265000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 12265000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 7410000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 7410000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 7410000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6843000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6843000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6843000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2883000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2883000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 634000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "InterestIncomeSecuritiesStateAndMunicipal": {
        "label": "Interest Income, Securities, State and Municipal",
        "description": "Interest income, including any amortization and accretion (as applicable) of discounts and premiums, derived from debt securities issued by municipal governments, local taxing districts and US state government agencies.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 209000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 155000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 104000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 187000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 32000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 278000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 278000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 33000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 48000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 48000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 15000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 15000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 62000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 62000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 62000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 14000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 14000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 14000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 75000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 75000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 75000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 13000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 13000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 25000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 25000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 12000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 12000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 133000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 133000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 133000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 108000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 108000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 108000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 174000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 174000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 174000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 12000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 12000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 24000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 24000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 12000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 12000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 30000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 30000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 6000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 6000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 36000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 36000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 36000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 6000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 8000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 2000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 10000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 12000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 12000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 12000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 13000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 33000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 33000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            }
          ]
        }
      },
      "InterestIncomeSecuritiesUSTreasury": {
        "label": "Interest Income, Securities, US Treasury",
        "description": "Interest income on US treasury securities. US treasury securities are negotiable debt obligations of the US government, secured by its full faith and credit and issued at various schedules and maturities. The income from treasury securities is exempt from state and local, but not federal, taxes. There are three types of securities issued by the US treasury (bonds, bills, and notes), which are distinguished by the amount of time from the initial sale of the bond to maturity.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 43525000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 14346000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 6927000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 20120000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 20120000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 5774000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 5774000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 24569000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 24569000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 3210000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 5469000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 5469000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 2259000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 2259000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7176000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7176000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 7176000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1707000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1707000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1707000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 8248000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 8248000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 8248000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 739000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 739000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1409000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1409000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 670000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 670000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 1968000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 1968000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 559000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 559000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2471000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2471000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2471000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 496000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 963000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 467000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1355000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 392000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1645000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1645000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1645000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11656000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11656000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11656000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 15353000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 15353000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 15353000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 11837000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 11837000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 17657000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment": {
        "label": "Interest Income, Securities, US Treasury and Other US Government",
        "description": "Amount of operating interest income, including amortization and accretion of premiums and discounts, on U.S. Treasury securities and other U.S. government securities.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 117265000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 39277000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 18118000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 54353000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 15076000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 65433000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 9350000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 19601000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 10250000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2010Q2"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 29007000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 9406000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2010Q3"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 36910000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 8257000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            }
          ]
        }
      },
      "InterestPaid": {
        "label": "Interest Paid, Including Capitalized Interest, Operating and Investing Activities",
        "description": "Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 326310000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 114772000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 186468000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 240686000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 240686000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 54425000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 99466000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 99466000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 155273000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 155273000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 155273000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 196002000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 196002000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 196002000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 50287000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 50287000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 85197000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 85197000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 129285000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 129285000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 129285000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 157477000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 157477000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 157477000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 28033000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 28033000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 51513000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 51513000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 84779000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 84779000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 104514000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 104514000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 104514000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 18422000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 18422000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 30265000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 30265000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 46873000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 46873000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 59234000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 59234000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 59234000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 13525000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 23516000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 36909000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 48894000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 48894000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 48894000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 46785000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 46785000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 46785000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 44998000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 44998000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 43639000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 43639000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 37097000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 37097000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 78230000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 78230000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 78230000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 35783000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 61061000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 85344000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 104567000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 104567000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 19935000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 20000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 31706000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 32000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 48926000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 49000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 62169000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 122000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 146000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 209000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 209000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 315000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 315000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 366000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1367000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2443000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            }
          ]
        }
      },
      "InterestPaidNet": {
        "label": "Interest Paid, Excluding Capitalized Interest, Operating Activities",
        "description": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 44998000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 43639000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 37097000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 105000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 62000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 525000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 525000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 525000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 525000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 366000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1367000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2443000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3686000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3686000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3686000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3686000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1294000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1294000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2618000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2618000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4005000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4005000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 5079000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 5079000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1224000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1224000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2422000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 3663000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 4810000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1161000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestRateCashFlowHedgeLiabilityAtFairValue": {
        "label": "Interest Rate Cash Flow Hedge Liability at Fair Value",
        "description": "Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 11309000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 14263000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-09-30",
              "val": 14263000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 9492000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 9492000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 9492000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 9492000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-03-31",
              "val": 7775000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 9800000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 9800000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 13531000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-09-30",
              "val": 13531000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 13531000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 10714000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 10714000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 10714000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 10714000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 10714000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-03-31",
              "val": 10325000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 11020000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 11170000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 10398000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "InterestReceivable": {
        "label": "Interest Receivable",
        "description": "Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.",
        "units": {
          "USD": [
            {
              "end": "2020-03-31",
              "val": 90000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 139800000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 111800000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 107700000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 107700000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 103200000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 91000000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 134000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 134000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 134000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 134000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 247000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 258000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 286000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 329000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 329000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 329000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 329000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 329000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 329000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 772000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 732000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 833000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 832000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 832000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 832000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 832000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 832000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 832000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 914000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 925000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 904000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 902000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "InvestmentsFairValueDisclosure": {
        "label": "Investments, Fair Value Disclosure",
        "description": "Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.",
        "units": {
          "USD": [
            {
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 13060000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 13060000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 13060000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 13060000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 18852000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 18116000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 17346000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 17885000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 17885000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 17885000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 17885000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 17885000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 17885000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 18139000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 20622000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 24888000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 28523000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 28523000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 28523000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 28523000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 28523000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 28523000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 33473000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 36077000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 37440000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 42553000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 42553000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 42553000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 42553000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 42553000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 42968000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 42045000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 43911000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 40408000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 40408000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 41804000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "LeaseCost": {
        "label": "Lease, Cost",
        "description": "Amount of lease cost recognized by lessee for lease contract.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 4114000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 8841000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 4727000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 15189000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 6348000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 20332000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 20332000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 20292000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 20292000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 20000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 6000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 15000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 19078000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 19000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 19000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 19000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 19000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 36000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 36000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 18000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 18000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 53000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 53000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 17000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 17000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 70000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 16000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 16000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 35000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 35000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 18000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 18000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 61000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 61000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 26000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 26000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 88000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 88000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 88000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 88000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 27000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 27000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 50000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 50000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 23000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 23000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 75000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 75000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 25000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 25000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 100000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 100000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 24000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 24000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 49000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 25000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 74000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 25000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 99000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 25000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityPaymentsDue": {
        "label": "Lessee, Operating Lease, Liability, to be Paid",
        "description": "Amount of lessee's undiscounted obligation for lease payment for operating lease.",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 86422000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 95366000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 94456000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 91578000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 80016000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 74506000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 428000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 426000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 414000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 391000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 439000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 439000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 394000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 364000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive": {
        "label": "Lessee, Operating Lease, Liability, to be Paid, after Year Five",
        "description": "Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 35343000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 42606000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 43841000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 36653000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 32045000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 29236000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 189000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 164000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 167000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 168000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 155000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 155000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 124000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 110000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths": {
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year One",
        "description": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 10310000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 7267000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 3617000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 14257000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 12865000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 12840000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 52000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 54000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 55000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 48000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 65000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 65000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 68000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 67000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityPaymentsDueYearFive": {
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year Five",
        "description": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 7772000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 8908000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 9258000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 7379000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 5223000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 5450000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 42000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 40000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 41000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 39000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 38000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 38000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 37000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 35000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityPaymentsDueYearFour": {
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year Four",
        "description": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 9575000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 10763000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 11142000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 9340000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 8146000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 6462000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 44000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 44000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 44000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 42000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 52000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 52000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 42000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 42000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityPaymentsDueYearThree": {
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year Three",
        "description": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 10947000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 12129000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 12546000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 11261000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 9980000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 9356000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 49000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 46000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 47000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 44000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 56000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 48000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo": {
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year Two",
        "description": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 12475000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 13693000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 14052000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 12688000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 11757000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 11162000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 52000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 51000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 52000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 50000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 67000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 67000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 67000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 62000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount": {
        "label": "Lessee, Operating Lease, Liability, Undiscounted Excess Amount",
        "description": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 14107000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 14804000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 15222000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 14832000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 11673000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 10075000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 43000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 41000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 39000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 43000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 43000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 37000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 35000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "Liabilities": {
        "label": "Liabilities",
        "description": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 15883667000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 16998194000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 16906948000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 16906948000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 16906948000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 19548101000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 19412460000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 19410405000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 19331087000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 19331087000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 19331087000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 19073697000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 19073697000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 19073697000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 19073697000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 19073697000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 19073697000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 19378362000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 19379281000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 19211461000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 19212380000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 19143414000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 19143414000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 19143928000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 19020365000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 19020365000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 19020365000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 19020365000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 19136170000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 19251505000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 19333538000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 19311200000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 19402848000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 19199496000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 19419645000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 19419645000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 19419645000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 19419645000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 19419645000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 19432431000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 19369492000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 19529295000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 19122416000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 19122416000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 19122416000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 19122416000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 19122416000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 20050167000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 19913695000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 19775784000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 27387519000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 27387519000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 27387519000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 27387519000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 27387519000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 28088272000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 28102965000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 28587296000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 28603825000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 28603825000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 28603825000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 28603825000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 28603825000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 29234463000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 29194699000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 29888162000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 29978409000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 29978409000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 29978409000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 29978409000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 29978409000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 30917709000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 31529999000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 31270323000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 31193448000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 31193448000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 31193448000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 31193448000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 31193448000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 31064323000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 31641680000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 31455646000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 31919675000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 31919675000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 31919675000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 31919675000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 31919675000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 32438361000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 34080481000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 34179842000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 36238312000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 36238312000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 36238312000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 36238312000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 36238312000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 37636933000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 43874750000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 44592459000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 45728412000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 45728412000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 45728412000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 45728412000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 45728412000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 49587206000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 50698828000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 52320682000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 53570899000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 53571000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 53571000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 53571000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 53571000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 98027000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 97031000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 99477000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 99636000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 99636000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 99636000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 99636000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 99636000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 99636000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 195442000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 189731000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 193376000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 192503000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 192503000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 192503000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 192503000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 192503000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 192503000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 195988000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 197340000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 197739000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 201492000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 201492000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 201492000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 201492000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 201492000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 206527000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 207357000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 211502000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 207460000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 207460000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 213911000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "LiabilitiesAndStockholdersEquity": {
        "label": "Liabilities and Equity",
        "description": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 17317880000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 18512878000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 18466063000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 18466063000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 18466063000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 21215691000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 21105769000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 21105769000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 21049291000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 21049291000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 21049291000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 20806659000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 21167495000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 21167495000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 21021650000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 21021650000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 21015344000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 21015344000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 21015344000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 20881493000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 20881493000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 20881493000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 20881493000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 20997298000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 21143628000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 21225661000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 21240990000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 21332638000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 21173620000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 21283652000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 21351012000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 21308822000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 21511352000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 21199091000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 21199091000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 21199091000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 21199091000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 21193878000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 22154997000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 22062840000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 21942491000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 30075113000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 30853649000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 30896855000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 31449824000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 31475934000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 32195657000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 32230403000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 32971910000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 32990836000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 34018405000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 34769850000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 34584154000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 34527512000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 34436437000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 35088566000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 34954659000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 35408629000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 35961670000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 37655094000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 37748324000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 39824496000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 41594453000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 47866194000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 48666873000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 49957680000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 53908606000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 55175318000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 56901977000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 58308140000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 58309000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 108597000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 107673000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 109310000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 109298000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 214658000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 209502000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 213765000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 213758000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 217836000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 219827000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 220567000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 223720000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 228822000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 229653000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 233488000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 229698000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 229698000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 235959000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableAllowance": {
        "label": "Loans and Leases Receivable, Allowance",
        "description": "Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.",
        "units": {
          "USD": [
            {
              "end": "2008-12-31",
              "val": 157569000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-06-30",
              "val": 162282000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 165282000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 172282000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 172282000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 172282000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2009-12-31",
              "val": 172282000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2009-12-31",
              "val": 172282000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 176273000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 188169000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 188169000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 218046000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 218046000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 218046000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 227765000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 227765000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 227765000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 227765000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 227765000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 227765000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2010-12-31",
              "val": 227765000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 227765000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 232597000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 232597000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 250050000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 250050000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 254184000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 254184000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 254184000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 270144000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 270144000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 270144000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 270144000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 270144000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2011-12-31",
              "val": 270144000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 272500000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 272500000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 272929000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 272929000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 276554000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 319018000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 319018000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 319018000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 319018000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 319018000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 273019000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 258316000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 237799000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 233394000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 233394000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 233394000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 233394000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 233394000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 222942000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 206246000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 200905000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 204466000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 205553000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 208317000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 205463000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 206216000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 206216000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 206216000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 206216000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 206216000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 206783000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 208008000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 211950000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 218795000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 218795000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 218795000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 218795000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 218795000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 220943000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 228798000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 231842000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 221893000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 221893000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 221893000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 221893000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 221893000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 223116000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 224865000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 219197000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 223712000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 228775000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 226583000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 226825000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 225141000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 209259000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 222450000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 223936000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 224314000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 210651000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 189094000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 183194000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 178493000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableCollateralForSecuredBorrowings": {
        "label": "Loans and Leases Receivable, Collateral for Secured Borrowings",
        "description": "Reflects the aggregate value of loans, trade receivables, securities and financial instruments that serve as collateral for obligations arising from a transfer of financial assets recorded as a secured borrowing.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 1380000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 2200000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 2200000000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 2200000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 2300000000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-12-31",
              "val": 6080000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 6080000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 5500000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 5500000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 6080000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 6080000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 6360000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableGainLossOnSalesNet": {
        "label": "Loans and Leases Receivable, Gain (Loss) on Sales, Net",
        "description": "Reflects the net positive or negative amount derived from subtracting from net proceeds of sale and the carrying amounts, net of allocated reserves, of financial assets transferred to third parties in transactions that qualify for sales treatment.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 299000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableGrossCarryingAmount": {
        "label": "Loans and Leases Receivable, Gross",
        "description": "Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 13989584000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 13767969000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 13767969000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 13488029000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 13488029000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 13488029000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 13488029000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 14050485000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 13928592000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 13928592000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 14160976000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 14160976000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 14160976000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 13943789000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 13943789000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 13943789000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 13943789000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 13943789000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 13673398000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 13673398000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 13461809000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 13461809000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 13352330000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 13385350000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 13385350000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 13385350000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 13385350000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 13385350000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 13130407000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 13098805000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 13072866000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 13133724000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 13133724000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 13133724000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 13133724000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 13133724000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 13471044000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 13524956000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 13802791000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 18769465000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 18769465000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 18769465000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 18769465000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 18769465000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 19091757000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 19520185000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 19855806000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 20239990000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 20239990000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 20239990000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 20239990000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 20239990000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 20417689000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 20742571000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 21296980000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 21737878000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 21737878000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 21737878000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 21737878000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 21737878000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 21906449000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 22871465000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 23149073000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 23596825000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 23596825000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 23596825000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 23596825000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 23596825000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 23611977000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 24538437000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 24886347000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 25523276000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 25523276000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 25523276000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 25523276000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 25523276000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 25463785000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 26728237000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 27196511000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 28881496000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 28881496000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 28881496000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 28881496000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 28881496000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 29240959000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 32418425000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 32845144000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 33180851000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 32689652000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 32516189000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 32371522000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableGrossCarryingAmountCovered": {
        "label": "Loans and Leases Receivable, Gross, Carrying Amount, Covered",
        "description": "Aggregate gross carrying amount of loans and leases receivable covered by loss sharing agreements.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 1029400000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 485300000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 485300000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 485300000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 485300000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 485300000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 443100000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 319700000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 296500000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 272600000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 272600000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 272600000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 272600000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 272600000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 258200000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 95500000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 91500000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 84800000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 84800000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 84800000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 84800000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 75900000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 73200000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 70400000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 67800000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 67800000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 65500000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 62100000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 58900000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 55600000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 53900000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 50200000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 47300000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2020-03-31",
              "val": 42400000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 38000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 36200000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 34500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableImpairedAtCarryingValue": {
        "label": "Loans and Leases Receivable, Impaired, at Carrying Value (Deprecated 2011-01-31)",
        "description": "Reflects the adjusted carrying amount of loans for which it is probable, based on current facts and circumstances, that a creditor will not initially be able to collect all amounts due according to the contractual terms of the loan agreement, or will not recover the previously reported carrying amount of the loan.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 107779000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-06-30",
              "val": 129188000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableImpairedInterestIncomeRecognized": {
        "label": "Loans and Leases Receivable, Impaired, Interest Income Recognized (Deprecated 2011-01-31)",
        "description": "Reflects the amount of interest income on impaired and nonperforming loans that was recognized as income during the reporting period.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 4308000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1673000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 608000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans": {
        "label": "Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans",
        "description": "Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 4172000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 18519000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 18519000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 23326000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 23326000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 27397000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableNetReportedAmount": {
        "label": "Loans and Leases Receivable, Net Amount",
        "description": "Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 11360763000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 12612879000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 12645737000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 12645737000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 12645737000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 14066029000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 13801415000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 13801415000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 13549923000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 13549923000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 13549923000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 13260264000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 13260264000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 13260264000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 13260264000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 13260264000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 13260264000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 13817888000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 13817888000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 13678542000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 13678542000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 13906792000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 13906792000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 13906792000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 13673645000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 13673645000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 13673645000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 13673645000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 13673645000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 13400898000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 13400898000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 13188880000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 13188880000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 13075776000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 13066332000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 13066332000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 13066332000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 13066332000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 13066332000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 12857388000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 12840489000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 12835067000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 12900330000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 12900330000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 12900330000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 12900330000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 12900330000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 13248102000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 13318710000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 13601886000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 18564999000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 18564999000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 18564999000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 18564999000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 18564999000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 18886204000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 19311868000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 19650343000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 20033774000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 20033774000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 20033774000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 20033774000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 20033774000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 20210906000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 20534563000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 21085030000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 21519083000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 21519083000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 21519083000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 21519083000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 21519083000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 21685506000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 22642667000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 22917231000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 23374932000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 23374932000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 23374932000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 23374932000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 23374932000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 23388861000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 24313572000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 24667150000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 25299564000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 25299564000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 25299564000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 25299564000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 25299564000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 25235010000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 26501654000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 26969686000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 28656355000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 28656355000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 28656355000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 28656355000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 28656355000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 29031700000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 32195975000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 32621208000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 32567661000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 32567661000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 32567661000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 32567661000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 32567661000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 32970200000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 32500558000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 32332995000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 32193029000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableOtherAllowance": {
        "label": "Loans and Leases Receivable, Other, Allowance (Deprecated 2016-01-31)",
        "description": "The allowance for other loan and lease losses represents the reserve to cover probable credit losses related to specifically identified other loans and leases, as well as probable credit losses inherent in the remainder of the other loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for other loan losses in connection with business combinations determined to be appropriate.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 54457000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 57968000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-09-30",
              "val": 57968000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableRelatedParties": {
        "label": "Loans and Leases Receivable, Related Parties",
        "description": "For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 2198000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1496000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1496000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1311000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1311000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1825000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 1825000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 1825000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 1045000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1045000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 1045000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 79000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 79000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 79000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 353000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 353000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 353000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 74000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 74000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 74000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 199000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 199000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 199000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 145000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 145000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 145000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 117000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 117000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2020-12-31",
              "val": 117000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 122000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 122000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 122000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 122000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 171000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 171000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 171000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1769000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1769000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableRelatedPartiesAdditions": {
        "label": "Loans and Leases Receivable, Related Parties, Additions",
        "description": "Reflects the amount of new advances made to related parties in the form of loan and lease receivables.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 274000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 605000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 39000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 39000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 314000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 314000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 11000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 11000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 134000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 134000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 5000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 5000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 19000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 19000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 21000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 21000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 61000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 61000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 61000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1657000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1657000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableRelatedPartiesCollections": {
        "label": "Loans and Leases Receivable, Related Parties, Collections (Deprecated 2016-01-31)",
        "description": "Reflects the amount of collections received from related parties to reduce the carrying amounts of loans and leases receivable due from them.",
        "units": {
          "USD": [
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 703000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 459000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -91000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -819000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 819000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 971000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableRelatedPartiesProceeds": {
        "label": "Loans and Leases Receivable, Related Parties, Proceeds",
        "description": "Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 971000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 40000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 40000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 290000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 290000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 59000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 59000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 47000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 47000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 16000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 16000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 12000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 12000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 12000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 59000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 59000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "LoansHeldForSaleMortgages": {
        "label": "Disposal Group, Including Discontinued Operation, Mortgage Loans (Deprecated 2015-01-31)",
        "description": "Amount classified as mortgage loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 67381000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 88933000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 88933000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 92539000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 92539000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 86333000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "LoansReceivableHeldForSaleAmount": {
        "label": "Financing Receivable, Held-for-Sale",
        "description": "Amount, before valuation allowance, of financing receivable classified as held-for-sale.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 47271000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 63696000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 63696000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 59766000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 59766000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 74401000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 74401000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 51179000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 51179000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 45505000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 45505000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 67869000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 67869000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 67869000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 67869000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 67869000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 76347000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 107881000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 120305000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 124837000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 124837000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 124837000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 124837000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 124837000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 129334000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 107768000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 98451000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 98741000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 99000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 99000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 99000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 99000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 83000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 38000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 21000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 60000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 60000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 60000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 60000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 60000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 60000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 94000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 117000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 58000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 86000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 92000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 68000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 85000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 85000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 85000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 85000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 185000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 125000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 112000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            }
          ]
        }
      },
      "LoansReceivableHeldForSaleNet": {
        "label": "Disposal Group, Including Discontinued Operation, Loans Receivable, Net (Deprecated 2015-01-31)",
        "description": "Amount classified as loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 115920000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 78485000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 67381000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 67381000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 67381000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 59530000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 91076000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 91076000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 79853000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 79853000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 79853000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 88933000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 88933000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 88933000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 88933000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 88933000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 88933000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 48222000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 48222000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 56004000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 56004000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 78178000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 78178000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 78178000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 92539000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 92539000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 92539000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 92539000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 92539000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 73457000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 73457000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 76374000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 76374000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 78610000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 86333000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 86333000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 86333000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 86333000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 86333000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 86351000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 62497000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 43054000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 47271000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 47271000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 47271000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 47271000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 53361000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 49851000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 43612000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 63696000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 66508000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            }
          ]
        }
      },
      "LoansReceivableHeldForSaleNetNotPartOfDisposalGroup": {
        "label": "Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance",
        "description": "Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 63696000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 63696000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-06-30",
              "val": 85040000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 71874000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 59766000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 59766000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 59766000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 66988000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 84795000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 95910000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 74401000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 74401000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 74401000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 49952000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 154534000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 70803000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 51179000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 51179000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 51179000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 46660000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 58961000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 46082000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 45505000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 45505000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 45505000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 45500000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 53232000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 52837000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 83256000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 67900000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 67900000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 67900000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 67900000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 67900000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 76300000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 107900000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 120300000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 124800000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 124800000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 124800000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 124800000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 124800000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 129300000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 107800000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 98500000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 98700000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "LongTermDebt": {
        "label": "Long-term Debt",
        "description": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 735803000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 879758000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 797366000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 797366000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 797366000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 922207000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 918930000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 918930000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 819145000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 819145000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 819145000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 809949000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 809949000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 809949000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 809949000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 809949000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 809949000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 801081000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 801081000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 792661000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 792661000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 744839000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 744839000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 744839000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 687599000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 687599000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 687599000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 687599000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 687599000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 649818000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 649818000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 644682000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 472170000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 444921000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 444921000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 444921000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 444252000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-12-31",
              "val": 510769000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 510769000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 351320000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 351320000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 704155000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 704155000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 832942000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 832942000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 870240000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 870240000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 319867000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 319867000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 588638000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 588638000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1248163000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1248163000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1194378000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 1195000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 1195000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-09-30",
              "val": 5215000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 45085000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 39685000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 37259000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 37145000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 37072000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 36770000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 37956000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 37641000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 38252000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 35784000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 35784000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 33792000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "LongTermDebtAndCapitalLeaseObligations": {
        "label": "Long-term Debt and Lease Obligation",
        "description": "Amount of long-term debt and lease obligation, classified as noncurrent.",
        "units": {
          "USD": [
            {
              "end": "2012-06-30",
              "val": 644682000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-12-31",
              "val": 444921000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 444921000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 444921000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-06-30",
              "val": 443313000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 510963000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 510769000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 510769000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 510769000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 510769000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 510769000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 440300000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 314529000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 313768000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 351320000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 351320000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 351320000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 351320000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 351320000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 468180000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 475568000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 705418000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 704155000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 704155000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 704155000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 704155000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 704155000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 779087000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 850504000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 840266000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 832942000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 832942000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 832942000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 832942000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 832942000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 727500000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 879957000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 866123000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 870240000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 870240000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 870240000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 870240000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 870240000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 194413000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 241360000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 297487000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 319867000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 13921000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 13921000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 13921000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 14970000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 18446000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 112153000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 1195000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 1195000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 1195000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 1195000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 2676000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 3813000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 5215000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 4459000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 45085000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 39685000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 37259000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 37169000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 37145000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 37072000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 36770000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 36684000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 37956000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 37641000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 38252000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 35784000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 35784000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 33792000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive": {
        "label": "Long-Term Debt, Maturity, after Year Five",
        "description": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 385176000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 220274000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 169990000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 204344000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 551575000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 623291000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 718546000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 143188000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 267147000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1000310000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 977723000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1552000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1048000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1044000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1041000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths": {
        "label": "Long-Term Debt, Maturity, Year One",
        "description": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 30752000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 3690000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 2908000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 147000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 3401000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 3232000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 1298000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 10000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 61995000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 10000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 82735000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 94000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 86000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 19000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 518000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive": {
        "label": "Long-Term Debt, Maturity, Year Five",
        "description": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 812000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 10504000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 121444000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 261000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 70271000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 76241000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 125500000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 6526000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 7500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 2649000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 17000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 19000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour": {
        "label": "Long-Term Debt, Maturity, Year Four",
        "description": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 205947000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 620000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 11005000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 136104000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 246000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 255000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 71431000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 13754000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 125500000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 6144000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 330000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 330000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 16000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree": {
        "label": "Long-Term Debt, Maturity, Year Three",
        "description": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 1063000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 206306000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 10725000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 135232000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 241000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 1384000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 14732000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 114138000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 125500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 5771000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 517000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 765000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1931000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1330000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo": {
        "label": "Long-Term Debt, Maturity, Year Two",
        "description": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 63849000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 3527000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 205422000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 13440000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 135652000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 1340000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 12693000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 13332000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 98709000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 125500000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 166000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1567000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2186000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1535000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "LossContingencyEstimateOfPossibleLoss": {
        "label": "Loss Contingency, Estimate of Possible Loss",
        "description": "Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-06-30",
              "val": 294000000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q2I"
            }
          ]
        }
      },
      "MarketableSecuritiesEquitySecurities": {
        "label": "Marketable Securities, Equity Securities (Deprecated 2018-01-31)",
        "description": "For an unclassified balance sheet, this item represents investments in common and preferred stocks and other forms of securities that provide ownership interests in a corporation.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 110107000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            }
          ]
        }
      },
      "MarketableSecuritiesGainLoss": {
        "label": "Marketable Securities, Gain (Loss)",
        "description": "Amount of unrealized and realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 971000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 971000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5411000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5411000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4440000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4440000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 9265000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 9265000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3854000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3854000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -7610000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -7610000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11328000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11328000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 14472000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 14472000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 3144000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 3144000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13505000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13505000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -967000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -967000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 20625000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 20625000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 20625000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -51408000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -51408000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 13162000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 13162000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 64570000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 64570000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10461000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10461000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -2701000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -2701000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 29395000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 29395000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 16011000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 27665000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 11654000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 31015000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3350000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 34081000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "MarketableSecuritiesRealizedGainLoss": {
        "label": "Marketable Securities, Realized Gain (Loss)",
        "description": "Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 96000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 96000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 235000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 235000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 139000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 139000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1181000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1181000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 946000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 946000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1190000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1190000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 44000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 44000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2315000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2315000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2271000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2271000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3029000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3029000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 714000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 714000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 16344000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 16344000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 16344000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 323000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 323000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 37316000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 37316000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 36993000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 36993000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 39884000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 39884000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2568000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2568000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 44550000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 44550000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 263000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 263000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 263000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 16261000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "MarketableSecuritiesUnrealizedGainLoss": {
        "label": "Marketable Securities, Unrealized Gain (Loss)",
        "description": "Amount of unrealized gain (loss) on investment in marketable security.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 875000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 875000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5176000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5176000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4301000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 4301000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 8084000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 8084000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 2908000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 2908000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11284000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11284000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 12157000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 12157000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 873000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 873000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 10476000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 10476000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -1681000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -1681000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -51731000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -51731000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -24154000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -24154000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 27577000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 27577000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -29423000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -29423000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -5269000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -5269000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 15748000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 27402000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 11654000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 30752000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3350000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            }
          ]
        }
      },
      "MerchantDiscountFees": {
        "label": "Merchant Discount Fees (Deprecated 2018-01-31)",
        "description": "Amount of earnings on fees charged to merchants for the cardholder's use of a credit card. Excludes interest income earned on credit card balances, transactions and credit card services including late, over limit, and annual fees.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 54543000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 38332000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 13220000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 50298000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 50298000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 12486000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 27731000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 15245000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 42619000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 42619000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 14887000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 14887000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56024000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56024000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56024000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 13521000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 13521000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 28556000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 28556000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 15035000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 15035000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 44112000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 44112000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 15556000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 15556000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 64075000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 64075000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 64075000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 18880000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 18880000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 40950000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 40950000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 22070000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 22070000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 62955000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 62955000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 22005000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 22005000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 84207000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 84207000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 84207000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 21977000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 21977000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 46213000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 46213000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 24236000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 24236000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 71392000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 71392000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 25179000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 25179000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 95774000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 95774000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 24987000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 6693000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 51577000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 26590000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 77456000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 25879000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 103962000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 6177000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            }
          ]
        }
      },
      "MortgageLoansInProcessOfForeclosureAmount": {
        "label": "Mortgage Loans in Process of Foreclosure, Amount",
        "description": "Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 24800000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 24800000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 24800000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-06-30",
              "val": 18100000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 18900000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 15600000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 15600000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 15600000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 15600000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 15600000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 17600000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 21100000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 20700000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 21800000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 21782000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 21782000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 21800000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 21800000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 28800000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 27700000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 26900000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 26900000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 26900000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 26900000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 26900000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 30600000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 25300000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 25100000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 22000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 22000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 22000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 22000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 22000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 23900000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 22800000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 21100000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 23000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 23000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 23000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 23000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 23000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 22000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 25500000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 27000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 29400000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 29400000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 29400000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 29400000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 29400000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 27100000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 27100000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 19600000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 15000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "MortgageLoansOnRealEstateCostOfMortgagesSold": {
        "label": "SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Cost of Mortgage Sold",
        "description": "Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from sale.",
        "units": {
          "USD": [
            {
              "start": "2004-12-31",
              "end": "2005-12-31",
              "val": 250000000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2005"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 753172000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 583750000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 583750000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 509647000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 509647000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 581911000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "NetCashProvidedByUsedInFinancingActivities": {
        "label": "Net Cash Provided by (Used in) Financing Activities",
        "description": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 444223000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 593620000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -107229000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -138343000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 340538000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 312060000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 312060000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 275939000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -37195000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -1865046000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -2043545000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 109823000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -512942000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -563619000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -563619000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 379098000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 715596000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 660734000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 660734000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1067179000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1067179000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1067179000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1501187000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1501187000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7741098000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7741098000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 8400427000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 8400427000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9517072000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9517072000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 9517000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3911917000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3912000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4984057000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4984000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6595976000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6596000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 7827975000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 7828000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 7828000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 7828000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -2597000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -2587000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -3678000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -3678000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -2414000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -2399000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -2686000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -2686000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -2686000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -2686000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -1186000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -1186000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -6697000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -6697000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -4273000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -4273000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -4699000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -4699000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -4699000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -4699000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3620000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3620000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 5088000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 5088000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4496000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4496000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7073000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7073000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 4777000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 4777000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 4557000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 7427000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2675000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 6644000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NetCashProvidedByUsedInFinancingActivitiesContinuingOperations": {
        "label": "Net Cash Provided by (Used in) Financing Activities, Continuing Operations",
        "description": "Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -138343000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 275939000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 275939000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -37195000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -37195000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -1865046000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -2043545000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -2784832000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -2784832000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -2784832000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -2910057000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -2910057000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -2910057000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 202550000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 202550000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 254869000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 254869000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 140519000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 140519000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 91984000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 91984000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 91984000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -20388000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -20388000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -62284000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -59398000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 70282000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 73168000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -212182000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -212182000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -212182000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 290224000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 290224000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 125526000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 125526000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -18309000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -18309000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -93961000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -93961000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -93961000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 418323000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 418323000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 405818000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 405818000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 876076000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 876076000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 944851000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 944851000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 944851000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 543057000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 543057000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 442241000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 442241000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 775175000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 775175000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 873611000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 875545000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 875545000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 806328000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 806328000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 411772000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 411772000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 170312000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 170312000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 113426000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 109823000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -91734000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -91734000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -340620000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -340619000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -512942000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -563619000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 379098000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 715596000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            }
          ]
        }
      },
      "NetCashProvidedByUsedInInvestingActivities": {
        "label": "Net Cash Provided by (Used in) Investing Activities",
        "description": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -856742000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -610161000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 98316000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -142866000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -207104000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -420575000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -376255000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -483011000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -129604000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1473690000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1658891000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -668672000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 109244000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 97573000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 101140000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -577972000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -978654000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -1098401000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -1098401000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -1558469000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -1558177000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -1596148000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -1441295000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -1441295000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -7829374000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -7829374000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -8640985000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -8640985000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -9871758000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -9907562000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -9908000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -3968346000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -3990000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -4352686000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -4386000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -6158803000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -6209000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -7568426000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -7568000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -7568000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -7568000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2382000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2195000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 2680000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 2692000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 786000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 805000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 2628000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 2628000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 6541000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 6541000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2787000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2787000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2429000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2429000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2429000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2429000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -4291000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -4291000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -6110000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -6110000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -6411000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -6411000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -10155000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -10155000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -4877000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -4877000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -5439000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -9240000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -5611000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -6537000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NetCashProvidedByUsedInInvestingActivitiesContinuingOperations": {
        "label": "Net Cash Provided by (Used in) Investing Activities, Continuing Operations",
        "description": "Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -142866000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -483011000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -483011000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -129604000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -77182000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1472575000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 1658891000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2282719000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2282719000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2523118000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2411927000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2704994000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 2704994000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -448833000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -325629000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -637468000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -445370000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -344874000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -344874000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -244343000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -244343000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -244343000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -232421000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -232421000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -182107000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -182107000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -407241000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -407241000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -224956000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -224956000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -224956000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -343434000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -343434000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -183734000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -183734000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -181838000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -181838000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -17698000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -17698000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -17698000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -589336000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -589336000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -572645000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -572645000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -1131360000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -1131360000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -1248003000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -1248003000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -1248003000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -694542000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -694542000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -563242000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -563242000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -1036807000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -1036807000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1100396000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1100396000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -1100396000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -981395000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -981395000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -585642000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -585642000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -717771000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -717771000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -668672000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -668672000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -454665000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -454665000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -254974000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -255966000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -196290000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -210891000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -577980000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -978654000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            }
          ]
        }
      },
      "NetCashProvidedByUsedInOperatingActivities": {
        "label": "Net Cash Provided by (Used in) Operating Activities",
        "description": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 212106000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 61062000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 138569000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 168076000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 131504000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 254130000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 209810000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 220616000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 146735000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 337430000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 462193000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 355258000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 330073000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 457336000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 453769000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 140033000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 219765000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 399160000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 399160000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 540569000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 540277000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 578248000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 17609000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 17609000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 100790000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 100790000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 216258000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 216258000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 340015000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 375819000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 376000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 104876000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 126000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -598055000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -565000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -461771000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -411000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -283783000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -284000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -284000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -284000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 400000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 577000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1243000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1231000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1771000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1737000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2791000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2791000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2791000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2791000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -362000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -362000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 554000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 554000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1759000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1759000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2660000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2660000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2660000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2660000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 461000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 461000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 878000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 878000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1869000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1869000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2988000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2988000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 98000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 98000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 957000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1873000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2923000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 172000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NetCashProvidedByUsedInOperatingActivitiesContinuingOperations": {
        "label": "Net Cash Provided by (Used in) Operating Activities, Continuing Operations",
        "description": "Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 168076000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 220616000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 220616000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 146735000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 94313000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 338545000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 462193000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 581272000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 581272000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 340873000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 628753000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 335686000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 335686000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 208145000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 84491000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 362802000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 170704000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 219661000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 219661000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 201288000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 201288000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 201288000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 73296000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 73296000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 147306000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 144420000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 266347000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 263461000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 331007000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 331007000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 331007000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 63082000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 63082000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 91561000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 91561000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 67541000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 67541000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 182242000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 182242000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 182242000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 62732000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 62732000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 77049000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 77049000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 197546000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 197546000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 233056000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 233056000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 233056000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 75157000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 75157000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 94484000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 94484000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 223251000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 223251000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 232440000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 230506000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 230506000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 137599000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 137599000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 190901000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 190901000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 304104000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 304104000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 351655000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 355258000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 458388000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 458388000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 519969000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 520960000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 635607000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 765800000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 140041000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 219765000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            }
          ]
        }
      },
      "NetChangeContractHoldersFunds": {
        "label": "Net Change Contract Holders Funds",
        "description": "The cash inflow or outflow for a segregated fund account during the period.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 0,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 3008000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 3008000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 3008000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 4944000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 4944000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            }
          ]
        }
      },
      "NetIncomeLoss": {
        "label": "Net Income (Loss) Attributable to Parent",
        "description": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 91058000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 14863000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 6200000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 97331000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 82468000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 116331000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 116331000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 106611000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 133158000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 135213000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 28602000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 28602000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 162959000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 162959000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 162959000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 27746000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 27746000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 27746000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 193044000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 193044000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 193044000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 62679000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 61760000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 83060000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 83979000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 21300000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 21300000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 164995000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 164995000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 164481000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 81935000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 81935000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 81421000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 195028000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 195028000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 195028000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 35495000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 35495000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 73078000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 73078000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 37583000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 37583000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 112602000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 112602000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 39524000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 39524000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 134348000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 134348000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 132395000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 55585000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 55585000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 99491000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 99491000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 43906000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 43906000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 140473000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 140473000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 40982000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 40982000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 167699000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 166869000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 166869000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 22366000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 22479000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 48916000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 49165000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 26550000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 26686000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 75279000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 75666000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 26363000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 26501000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 138562000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 138562000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 138562000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 63816000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 67158000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 111680000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 111680000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 44522000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 44522000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 167638000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 167638000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 55958000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 55958000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 210386000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 210386000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 210386000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 52072000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 52072000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 121388000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 121388000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 69316000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 69316000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 172792000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 172792000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 51404000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 51404000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 225482000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 225482000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 225482000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 67621000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 67621000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 202281000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 202281000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 134660000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 134660000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 269345000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 269345000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 67064000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 67064000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 323752000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 323752000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 323752000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 100231000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 100231000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 193522000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 193522000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 93291000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 93291000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 310840000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 310840000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 117318000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 117318000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 400313000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 400313000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 400313000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 111359000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 111359000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 230718000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 230718000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 119359000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 119359000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 355497000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 355497000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 124779000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 124779000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 457371000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 457371000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 457371000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 57169000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 57169000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 210955000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 210955000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 153786000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 153786000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 353639000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 353639000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 142684000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 142684000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 491723000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 491723000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 492000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 147316000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 147000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 300104000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 300000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 152788000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 153000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 424177000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 424000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 124073000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 124000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 547459000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 547000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 547000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 547000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 271000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 271000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 526000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 526000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 255000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 255000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 841000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 841000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 315000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 315000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1098000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1098000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1098000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1098000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9518000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9518000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10200000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10200000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 682000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 682000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 10952000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 10952000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 752000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 752000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11466000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11466000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11466000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11466000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 731000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 731000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1438000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1438000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 707000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 707000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2077000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2077000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 639000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 639000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2777000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2777000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 483000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 483000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1058000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 575000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1626000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 568000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2206000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 534000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NetIncomeLossAvailableToCommonStockholdersBasic": {
        "label": "Net Income (Loss) Available to Common Stockholders, Basic",
        "description": "Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 400313000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 111359000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 230718000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 119359000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 355497000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 124779000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 457371000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 457371000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 57169000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 57169000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 206165000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 206165000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 148996000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 148996000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 344213000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 344213000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 138048000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 138048000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 477661000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 477661000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 478000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 142680000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 143000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 290832000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 291000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 148152000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 148000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 410269000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 410000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 119437000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 119000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 528915000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 529000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 529000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 529000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 264000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 264000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 502000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 502000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 238000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 238000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 805000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 805000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 303000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 303000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1048000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1048000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1048000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1048000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9504000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9504000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10171000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10171000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 667000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 667000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 10908000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 10908000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 737000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 737000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11407000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11407000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11407000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11407000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 716000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 716000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1407000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1407000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 691000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 691000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2031000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2031000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 624000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 624000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2716000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2716000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 468000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 468000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1029000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 561000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1583000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 554000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2149000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 508000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NetIncomeLossAvailableToCommonStockholdersDiluted": {
        "label": "Net Income (Loss) Available to Common Stockholders, Diluted",
        "description": "Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) available to common shareholders.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 344213000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 138048000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 478000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 143000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 291000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 148000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 410269000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 410000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 119437000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 119000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 529000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 529000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 529000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 264000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 264000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 502000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 502000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 238000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 238000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 805000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 805000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 303000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 303000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1048000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1048000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1048000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1048000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9504000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 9504000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10171000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10171000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 667000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 667000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 10908000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 10908000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 737000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 737000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11407000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11407000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11407000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11407000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 716000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 716000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1407000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1407000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 691000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 691000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2031000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2031000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 624000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 624000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2716000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2716000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 468000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 468000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1029000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 561000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1583000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 554000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2149000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 508000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification": {
        "label": "New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification (Deprecated 2020-01-31)",
        "description": "Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2400000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2400000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2400000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2012"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -50052000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -50052000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            }
          ]
        }
      },
      "NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1": {
        "label": "Noncash or Part Noncash Acquisition, Fixed Assets Acquired",
        "description": "\"The amount of fixed assets that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"\"Part noncash\"\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.\"",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 5327000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 5327000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 12196000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 12196000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 12196000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            }
          ]
        }
      },
      "NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1": {
        "label": "Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed)",
        "description": "\"The net book value of a nonmonetary asset transferred or exchanged in connection with the acquisition of a business or asset in a noncash transaction. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"\"Part noncash\"\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Nonmonetary assets and liabilities are assets and liabilities that will not result in cash receipts or cash payments in the future.\"",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 1924179000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2291659000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2291659000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2291659000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2291659000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2225370000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 2225370000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2934464000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2935309000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2935309000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2934464000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2934464000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 2934464000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1": {
        "label": "Noncash or Part Noncash Acquisition, Value of Liabilities Assumed",
        "description": "\"The total amount of [all] liabilities that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"\"Part noncash\"\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.\"",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 1819745000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2155861000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2155861000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2155861000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2155861000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2161896000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 2161896000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2784047000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2784047000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2784047000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2784047000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2784047000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 2784047000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "NoninterestBearingDepositLiabilities": {
        "label": "Noninterest-bearing Deposit Liabilities",
        "description": "The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 2974494000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 3261987000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 3215414000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 3215414000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 3215414000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 3762622000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 3730321000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 3730321000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 3859389000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 3859389000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 3859389000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 3976366000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 3976366000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 3976366000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 3976366000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 3976366000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 3976366000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 4164449000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 4164449000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 4166886000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 4166886000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 4274945000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 4274945000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 4274945000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 4331706000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 4331706000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 4331706000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 4331706000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 4331706000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 4572300000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 4572300000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 4761369000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 4761369000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 4895588000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 4885700000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 4885700000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 4885700000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 4885700000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 4885700000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 4915038000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 5151378000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 5323051000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 5241817000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 5241817000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 5241817000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 5241817000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 5241817000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 5627868000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 5775322000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 5844786000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 8086784000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 8086784000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 8086784000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 8086784000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 8086784000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 8484192000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 8970056000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 9171529000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 9274470000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 9274470000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 9274470000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 9274470000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 9274470000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 9661441000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 9779926000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 10245674000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 10130549000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 10130549000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 10130549000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 10130549000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 10130549000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 10797613000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 11175581000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 11483033000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 11237375000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 11237375000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 11237375000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 11237375000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 11237375000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 12000741000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 12181717000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 12212144000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 11882670000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 11882670000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 11882670000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 11882670000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 11882670000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 12376913000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 12950394000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 12966890000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 12926796000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 12926796000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 12926796000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 12926796000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 12926796000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 13688744000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 18149466000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 18234561000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 18014029000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 18014029000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 18014029000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 18014029000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 18014029000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 20515142000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 20974111000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 21514407000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 21404808000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 21405000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 21405000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 21405000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 21405000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 25898000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 26645000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 26587000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 24922000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 24922000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 24922000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 24922000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 24922000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 24922000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 54649000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 44547000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 43141000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 39799000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 39799000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 39799000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 39799000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 39799000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 39799000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 39276000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 40016000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 39396000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 38633000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 38633000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 38633000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 38633000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 38633000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 40767000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 40879000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 42752000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 40653000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 40653000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 43606000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "NoninterestExpense": {
        "label": "Noninterest Expense",
        "description": "Total aggregate amount of all noninterest expense.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 600382000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 313613000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 159120000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 478112000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 164499000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 651503000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 651503000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 172950000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 354726000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 354726000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 181776000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 181776000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 531577000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 531577000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 531577000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 176851000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 176851000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 176851000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 733376000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 733376000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 733376000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 190028000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 190028000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 377510000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 377510000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 187482000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 187482000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 581342000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 581342000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 581342000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 203832000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 203832000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 203832000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 792925000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 792925000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 792925000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 183331000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 183331000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 378128000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 378128000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 194797000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 194797000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 568205000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 568205000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 190077000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 190077000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 766933000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 766933000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 766933000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 194355000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 194355000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 382922000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 382922000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 188567000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 188567000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 575065000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 575065000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 192143000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 192143000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 771380000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 771380000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 771380000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 191030000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 191030000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 390050000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 390050000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 199020000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 199020000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 591860000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 591860000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 201810000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 201810000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 846289000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 849076000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 849076000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 258260000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 258166000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 522857000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 522857000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 264691000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 264691000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 783029000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 783029000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 260172000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 260172000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1038915000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1038915000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1038915000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 251671000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 251671000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 509974000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 509974000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 258303000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 258303000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 777207000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 777207000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 267233000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 267233000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1048738000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1048738000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 937766000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 264345000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 236700000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 549951000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 491746000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 285606000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 255047000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 836918000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 749389000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 286967000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 257642000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1131535000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1012469000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1012469000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 268063000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 268063000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 534056000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 534056000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 265993000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 265993000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 801593000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 801593000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 267537000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 267537000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1076971000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1076971000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1076971000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 267657000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 267657000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 541054000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 541054000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 273397000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 273397000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 811479000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 811479000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 270425000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 270425000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1103741000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1103741000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1103741000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 299971000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 299971000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 591650000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 591650000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 291679000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 291679000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 883312000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 883312000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 291662000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 291662000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1188685000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1188685000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1189000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 295926000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 297000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 597504000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 597000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 301578000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 300000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 910322000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 911000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 312818000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 314000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1233510000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1234000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1234000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1234000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 810000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 810000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1555000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1555000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 745000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 745000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2315000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2315000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 760000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 760000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3075000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3075000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3075000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3075000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 855000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 855000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 2427000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 2427000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 1572000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 1572000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 3843000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 3843000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1416000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1416000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5335000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5335000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5335000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5335000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1376000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1376000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2762000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2762000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1386000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1386000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4218000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4218000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1456000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1456000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 5735000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 5735000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1493000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1493000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2993000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 1500000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 4484000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 1491000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 6056000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1536000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NoninterestIncome": {
        "label": "Noninterest Income",
        "description": "The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 307506000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 141108000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 71416000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 321961000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 180853000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 403451000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 403451000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 211949000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 301194000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 304571000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 92622000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 92622000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 354540000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 354540000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 354540000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 49969000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 49969000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 49969000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 406214000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 406214000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 406214000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 131090000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 129580000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 196229000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 197739000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 66649000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 66649000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 359973000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 359973000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 359128000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 163744000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 163744000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 162899000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 464366000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 464366000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 464366000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 46943000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 46943000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 104239000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 104239000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 57296000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 57296000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 156081000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 156081000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 51842000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 51842000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 189300000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 189300000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 192254000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 57513000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 57513000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 122508000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 122508000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 64995000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 64995000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 194426000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 194426000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 71918000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 71918000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 263603000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 267382000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 267382000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 61181000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 62314000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 126563000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 128903000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 65382000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 66589000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 203953000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 207502000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 77390000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 78599000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 340426000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 343213000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 343213000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 145378000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 150753000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 258203000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 258203000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 107450000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 107450000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 367953000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 367953000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 109750000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 109750000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 467088000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 467088000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 467088000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 105282000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 105282000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 245532000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 245532000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 140250000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 140250000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 363373000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 363373000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 117841000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 117841000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 488071000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 488071000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 377099000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 127292000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 99647000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 375492000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 317287000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 248200000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 217641000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 500879000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 413350000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 125387000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 96062000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 641029000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 521963000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 521963000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 122684000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 122684000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 223611000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 223611000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 100927000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 100927000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 318142000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 318142000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 94531000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 94531000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 400149000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 400149000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 400149000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 103663000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 103663000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 210538000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 210538000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 106875000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 106875000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 311468000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 311468000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 100930000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 100930000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 415861000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 415861000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 415861000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 64011000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 64011000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 229413000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 229413000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 165402000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 165402000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 349985000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 349985000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 120572000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 120572000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 476750000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 476750000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 477000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 136649000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 137000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 270799000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 270000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 134150000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 133000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 393743000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 394000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 122944000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 124000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 508002000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 508000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 508000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 508000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 850000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 850000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1274000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1274000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 424000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 424000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1707000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1707000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 433000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 433000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2136000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2136000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2136000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2136000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 10259000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 10259000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10917000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10917000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 658000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 658000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 11532000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 11532000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 615000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 615000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12075000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12075000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12075000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12075000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 627000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 627000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1266000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1266000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 639000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 639000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1916000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1916000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 650000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 650000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2615000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2615000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 635000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 635000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1313000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 678000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2012000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 699000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2727000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 692000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NoninterestIncomeOther": {
        "label": "Noninterest Income, Other",
        "description": "Represents the total of noninterest income derived from certain activities and assets including (for example): (1) venture capital investments; (2) bank owned life insurance; (3) foreign currency transactions; and (4) mortgage servicing rights.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 2205000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -341000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": -366000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 365000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 706000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 4518000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 4518000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 139000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 89000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 14000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 102000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": -125000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 762000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 762000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -190000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": -279000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 748000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 748000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 7431000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 7431000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 7431000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 910000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1434000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 1751000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1751000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 317000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 317000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 13363000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 13363000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 13363000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 11612000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 11612000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 11612000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 23438000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 23438000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 29055000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1908000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3595000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4160000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 5909000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2252000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2314000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -638000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 1827000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -4798000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -4082000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -1231000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1965000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 4919000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 11116000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 11174000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 16963000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 16963000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 5789000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 5789000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 38896000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 38896000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 21933000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 21933000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 45970000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 49749000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 49749000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4608000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 5741000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 11258000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 13598000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 6650000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 7857000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 16995000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 20544000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 5737000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 6946000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29277000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29277000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29277000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 8510000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 8560000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 19584000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 19584000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 11074000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 11074000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 25126000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 25126000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5542000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5542000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 36359000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 36359000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 36359000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 5421000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 5421000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 11411000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 11411000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 5990000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 5990000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 22129000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 22129000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 10718000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 10718000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 34170000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 34170000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 34170000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 7115000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 7115000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 15180000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 12279000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 8065000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 6792000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 24137000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 19421000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 8957000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 7187000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 47841000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 35358000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 29081000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 8642000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 7164000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 13165000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 13165000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 6001000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 6001000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 15703000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 15703000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 2538000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 2538000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 26041000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 19700000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 19700000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3919000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3919000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 8953000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 8953000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5034000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5034000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 15129000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 15129000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 6176000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 6176000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 18431000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 18431000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 18431000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 625000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 625000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3322000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3322000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2697000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2697000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 5330000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 5330000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2008000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2008000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 7446000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 7446000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 44000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1860000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 20000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 3724000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 21000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 1864000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 6363000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 29000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 2639000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9445000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 38000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 16000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 26000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 26000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 79000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 79000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 37000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 37000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 97000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 97000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 97000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 139000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 37000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 41000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 68000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 77000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 32000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 36000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 89000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 102000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 21000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 25000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 120000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 120000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 136000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 136000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 36000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 38000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 73000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 77000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 37000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 39000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 92000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 98000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 21000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 148000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 148000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 14000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 14000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 56000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 42000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 107000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 51000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 160000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 38000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "NotesReceivableGross": {
        "label": "Financing Receivable, before Allowance for Credit Loss",
        "description": "Amount, before allowance for credit loss, of financing receivable.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 28322780000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 28881496000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 28881496000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 28881496000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 29240959000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 32418425000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 32845144000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 32791975000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 33180851000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 32689652000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 32516189000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 32371522000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "NumberOfInterestRateDerivativesHeld": {
        "label": "Number of Interest Rate Derivatives Held",
        "description": "Number of interest rate derivative instruments held by the entity at the reporting date.",
        "units": {
          "interestrateswaps": [
            {
              "end": "2011-12-31",
              "val": 1,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            }
          ]
        }
      },
      "NumberOfReportableSegments": {
        "label": "Number of Reportable Segments",
        "description": "Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.",
        "units": {
          "reportablesegment": [
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            }
          ],
          "segment": [
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            }
          ]
        }
      },
      "NumberOfStatesInWhichEntityOperates": {
        "label": "Number of States in which Entity Operates",
        "description": "The number of states the entity operates in as of the balance sheet date.",
        "units": {
          "state": [
            {
              "end": "2019-12-31",
              "val": 19,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 19,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 22,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-09-30",
              "val": 30,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            }
          ],
          "State": [
            {
              "end": "2021-12-31",
              "val": 19,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 22,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 22,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 22,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            }
          ],
          "loan": [
            {
              "end": "2023-03-31",
              "val": 23,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 23,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            }
          ]
        }
      },
      "NumberOfStores": {
        "label": "Number of Stores",
        "description": "Represents the number of stores.",
        "units": {
          "Branches": [
            {
              "end": "2013-12-31",
              "val": 397,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            }
          ],
          "branch": [
            {
              "end": "2014-12-31",
              "val": 572,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 559,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 550,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 545,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 551,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 574,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 542,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 529,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 600,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 550,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 550,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 500,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-09-30",
              "val": 500,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            }
          ],
          "loan": [
            {
              "end": "2023-03-31",
              "val": 550,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 560,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            }
          ]
        }
      },
      "OccupancyNet": {
        "label": "Occupancy, Net",
        "description": "Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 60839000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 31376000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 15970000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 48658000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 17282000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 66266000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 66266000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 17836000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 36353000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 36353000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 18517000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 18517000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 54706000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 54706000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 54706000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 18353000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 18353000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 18353000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 72766000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 72766000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 72766000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 18313000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 18313000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 36800000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 36800000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 18487000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 18487000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 55338000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 55338000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 55338000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 18538000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 18538000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 18538000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 74832000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 74832000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 74832000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 18607000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 18607000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 36607000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 36607000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 18000000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 18000000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 55467000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 55467000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 18860000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 18860000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 74798000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 74798000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 74798000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 18809000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 18809000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 37273000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 37273000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 18464000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 18464000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 56117000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 56117000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 18844000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 18844000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 75718000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 75713000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 75713000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 20425000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 20410000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 41362000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 40710000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 20937000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 20300000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 60975000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 60975000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 20265000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 20265000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 86775000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 86775000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 86775000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 25620000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 25620000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 51152000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 51152000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 25532000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 25532000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 73412000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 73412000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 22260000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 22260000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 98191000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 98191000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 98191000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 25012000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 25012000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 49967000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 49967000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 24955000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 24955000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 74824000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 74824000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 24857000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 24857000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 102609000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 102609000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 102609000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 24762000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 24762000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 50821000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 50821000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 26059000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 26059000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 77415000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 77415000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 26594000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 26594000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 104690000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 104690000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 104690000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 27954000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 27954000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 54054000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 54054000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 26100000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 26100000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 80686000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 80686000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 26632000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 26632000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 109169000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 109169000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 109169000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 27761000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 27761000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 54647000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 54647000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 26886000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 26886000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 82810000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 82810000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 28163000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 28163000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 111179000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 111179000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 111179000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 27480000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 27480000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 57036000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 57036000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 29556000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 29556000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 85026000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 85026000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 27990000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 27990000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 117169000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 117169000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 117000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 29743000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 30000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 58182000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 58000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 28439000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 28000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 87283000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 87000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 29101000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 29000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 117180000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 117000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 117000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 117000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 49000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 48000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 97000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 96000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 48000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 48000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 144000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 143000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 47000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 47000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 194000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 191000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 191000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 191000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 50000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 50000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 114000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 114000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 64000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 64000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 179000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 179000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 65000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 65000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 244000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 244000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 244000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 244000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 62000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 62000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 120000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 120000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 58000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 58000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 182000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 182000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 62000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 62000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 242000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 242000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 58000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 58000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 119000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 61000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 177000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 58000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 238000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 60000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OperatingLeaseCost": {
        "label": "Operating Lease, Cost",
        "description": "Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3204000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 6785000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 3581000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 12059000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 5273000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 16094000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 16094000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 15023000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 15023000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 15000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 13993000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 16000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 16000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 30000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 30000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 44000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 44000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 14000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 14000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 13000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 13000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 28000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 28000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 15000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 15000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 46000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 46000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 18000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 18000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 64000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 64000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 64000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 64000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 18000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 18000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 37000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 37000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 19000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 19000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 56000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 56000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 76000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 76000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 18000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 18000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 36000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 18000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 54000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 18000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 72000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 17000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OperatingLeaseLiability": {
        "label": "Operating Lease, Liability",
        "description": "Present value of lessee's discounted obligation for lease payments from operating lease.",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 72315000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 80562000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 79234000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 76746000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 76746000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 76746000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 76746000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 76746000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 75011000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 73481000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 70129000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 68343000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 68343000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 68343000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 68343000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 68343000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 65841000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 65659000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 63025000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 64431000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 65000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 385000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 384000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 373000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 352000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 352000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 352000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 352000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 352000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 352000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 345000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 368000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 411000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 396000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 396000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 396000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 396000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 396000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 396000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 397000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 385000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 373000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 357000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 357000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 357000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 357000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 357000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 340000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 356000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 342000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 329000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 329000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 317000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "OperatingLeasePayments": {
        "label": "Operating Lease, Payments",
        "description": "Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3550000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 6613000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 9579000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 15703000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 15703000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14237000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14237000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 13054000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 13000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 14000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 14000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 26000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 26000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 40000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 40000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 54000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 54000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 54000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 54000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 13000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 13000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 28000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 28000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 45000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 45000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 63000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 63000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 63000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 63000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 18000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 18000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 37000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 37000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 57000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 57000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 77000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 77000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 19000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 19000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 40000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 58000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 77000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 19000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OperatingLeaseRightOfUseAsset": {
        "label": "Operating Lease, Right-of-Use Asset",
        "description": "Amount of lessee's right to use underlying asset under operating lease.",
        "units": {
          "USD": [
            {
              "end": "2019-03-31",
              "val": 70815000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 81534000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 79857000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 77115000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 77115000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 77115000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 77115000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 77115000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 75174000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 73488000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 69968000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 68048000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 68048000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 68048000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 68048000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 68048000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 65330000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 65090000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 62214000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 63207000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 64000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 384000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 378000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 366000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 337000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 360000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 403000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 354000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 354000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 354000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 354000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 354000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 354000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 355000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 344000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 331000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 316000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 316000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 316000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 316000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 316000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 300000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 318000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 305000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 294000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 294000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 285000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDue": {
        "label": "Operating Leases, Future Minimum Payments Due",
        "description": "Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 108996000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 111229000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 90821000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 87726000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 101011000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 117691000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 122425000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 110308000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueCurrent": {
        "label": "Operating Leases, Future Minimum Payments Due, Next Twelve Months",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 19581000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 20910000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 17181000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 16834000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 18543000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 26068000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 25797000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 18058000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInFiveYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Five Years",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 6432000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 5846000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 4574000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 4445000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 5589000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 6114000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 9181000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 10434000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInFourYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Four Years",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 9056000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 9035000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 5969000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 6274000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 8040000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 7081000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 10780000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 12381000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInThreeYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Three Years",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 10738000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 13805000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 8539000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 8463000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 11017000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 13295000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 12691000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 14564000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInTwoYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Two Years",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 13755000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 16911000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 13004000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 11598000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 14415000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 22000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 18838000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 16377000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueThereafter": {
        "label": "Operating Leases, Future Minimum Payments, Due Thereafter",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 49434000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 44722000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 41554000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 40112000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 43407000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 43133000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 45138000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 38494000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesRentExpenseNet": {
        "label": "Operating Leases, Rent Expense, Net",
        "description": "Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 19922000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 24627000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 24627000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 24749000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 24749000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 24700000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 23630000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 23600000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 23600000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 21400000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 21400000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 21400000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 18500000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 18500000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 18500000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 13800000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 13800000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 13800000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 13000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 13000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 13000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 15200000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 15200000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 15500000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "OperatingLeasesRentExpenseSubleaseRentals1": {
        "label": "Operating Leases, Rent Expense, Sublease Rentals",
        "description": "The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 2014000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1685000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1685000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1667000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1667000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1700000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1728000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1700000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1700000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1800000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1800000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1800000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2700000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2700000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2700000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6400000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6400000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6400000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 6500000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 6500000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 6500000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 6600000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 6600000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 7800000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "OperatingLeaseWeightedAverageDiscountRatePercent": {
        "label": "Operating Lease, Weighted Average Discount Rate, Percent",
        "description": "Weighted average discount rate for operating lease calculated at point in time.",
        "units": {
          "pure": [
            {
              "end": "2019-03-31",
              "val": 0.0336,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 0.0326,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 0.0322,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 0.0323,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0.0314,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0.03,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 0.03,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0.03,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0.03,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0.03,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.0207,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.021,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.0213,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.0219,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0.0219,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0.0219,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0.0219,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0.0219,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0.0219,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.0222,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.0242,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.027,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.027,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.027,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0.027,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0.027,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0.027,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0.027,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0.0276,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0.0279,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0.028,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0.0294,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0.0294,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0.0294,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0.0294,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0.0294,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0.0294,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0.0297,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0.031,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0.031,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0.031,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0.031,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "OtherAssets": {
        "label": "Other Assets",
        "description": "Amount of assets classified as other.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 197702000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 186083000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 225703000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 225703000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 225703000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 223827000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 201794000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 201794000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 245195000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 245195000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 245195000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 258524000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 258524000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 258524000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 258524000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 258524000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 258524000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 244251000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 244251000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 264577000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 264577000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 265337000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 265337000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 265337000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 286430000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 286430000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 286430000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 286430000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 324369000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 278415000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 278415000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 272531000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 272531000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 261801000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 367610000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 367610000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 367610000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 367610000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 367610000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 344437000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 334437000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 329292000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 263797000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 263797000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 263797000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 263797000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 258568000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 250384000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 281465000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 351685000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 394027000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 394027000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 394027000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 394027000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 394027000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 368096000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 425680000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 616513000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 417391000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 417391000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 417391000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 417391000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 417391000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 403470000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 784076000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 401521000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 471412000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 471412000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 471412000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 471412000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 471412000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 433524000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 424233000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 365477000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 686371000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 686371000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 688594000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 688594000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 688594000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 329553000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 442333000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 397692000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 433595000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 433595000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 433595000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 433595000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 433595000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 439599000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 739440000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 540924000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 610891000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 610891000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 610891000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 610891000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 610891000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 651468000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 663116000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 710158000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 783953000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 783953000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 783953000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 783953000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 783953000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 750460000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 1593694000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 1584092000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 1657356000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 1739000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 1739000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 1739000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 1855000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 3330000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 3339000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 3660000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 4369000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 4369000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 4369000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 4369000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 4369000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 4369000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 7450000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 5769000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 6212000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 5857000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 5857000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 5857000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 5857000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 5857000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 5857000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 5831000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 6402000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 6091000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 6740000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 6740000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 6740000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 6740000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 6740000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 6796000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 7064000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 7108000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 7523000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 7523000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 7513000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "OtherBorrowings": {
        "label": "Other Borrowings",
        "description": "The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 13921000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 148318000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 148318000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 148318000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 148318000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 148318000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 105303000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 96791000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 92456000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 88470000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 88470000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 88470000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 88470000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 88470000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 84502000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 80531000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 76139000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 72155000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 72000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 72000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 84000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 81000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecrease": {
        "label": "Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax (Deprecated 2012-01-31)",
        "description": "Amounts recognized in other comprehensive income (but not yet recognized in net periodic benefit cost), including the net gain (loss) and net prior service cost (credit) arising during the period. Also includes reclassification adjustments out of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -53703000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2805000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 51559000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease": {
        "label": "Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax (Deprecated 2012-01-31)",
        "description": "The increase (decrease) in accumulated comprehensive income during the period related to pension and other postretirement benefit plans, after tax. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 32684000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -1706000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1003000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 2005000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 1002000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 3008000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1003000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -31369000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1698000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 3395000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 1697000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 5091000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 1696000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax": {
        "label": "Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax",
        "description": "Amount, after tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -58630000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -44315000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -44315000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 123557000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 123557000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 123557000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -78472000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -78472000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -78472000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 691000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 691000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 691000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -70424000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -70424000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -70424000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -12945000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -12945000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -12945000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -32012000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -32012000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -20049000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax": {
        "label": "Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax",
        "description": "Amount of tax expense (benefit) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -22959000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -17354000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -17354000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 48475000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 48475000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 48475000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -30526000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -30526000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -30526000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 297000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 297000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 297000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -25077000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -25077000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -25077000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -4789000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -4789000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -4789000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -7363000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -7363000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -7363000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -4611000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -4611000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -4611000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 12656000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 12656000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 22512000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDefinedBenefitPlansTax": {
        "label": "Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax (Deprecated 2012-01-31)",
        "description": "Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -19525000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2669000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -645000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -1291000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": -646000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -1936000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": -645000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 22959000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1092000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -2185000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -1093000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -3277000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -1092000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPeriodIncreaseDecrease": {
        "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax (Deprecated 2012-01-31)",
        "description": "Pre tax change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges, net of reclassifications into earnings during the period. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. Includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 67000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -9994000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 3175000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 2623000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": -552000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -78000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": -2701000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -8329000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1138000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1219000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 81000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 1838000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 619000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease": {
        "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax (Deprecated 2012-01-31)",
        "description": "Net of tax effect change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 3208000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -2496000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1039000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -186000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": -1225000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -2444000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": -2258000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -739000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 235000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -186000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -421000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -276000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -90000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease": {
        "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect (Deprecated 2012-01-31)",
        "description": "Total tax effect of the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. The change includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -2098000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 1670000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 834000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -26000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 2093000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 572000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -2346000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 2346000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 3513000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 3946000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -1629000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 678000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -1254000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -1026000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 122000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 228000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 31000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1057000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3289000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -450000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -482000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -32000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -726000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -244000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax",
        "description": "Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -105000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -52000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -158000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": -53000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -52000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -104000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -104000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": -52000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": -52000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -158000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -158000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -54000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -54000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -52000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -52000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -105000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -105000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": -53000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": -53000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -158000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -158000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": -53000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": -53000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -20000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -20000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -40000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -40000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -20000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -20000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -59000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -59000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -19000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -19000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -14000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -28000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": -14000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -43000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -15000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax": {
        "label": "Other Comprehensive Income (Loss), before Reclassifications, Net of Tax",
        "description": "Amount after tax, before reclassification adjustments of other comprehensive income (loss).",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 8130000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 8279000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -22836000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -418000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -23301000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -22883000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -22326000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -20907000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 1963000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2394000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 44414000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 46332000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 7697000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 7697000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 27372000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 27372000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 19675000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 19675000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 20954000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 20954000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -6418000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -6418000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -48859000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -13115000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 18956000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 18956000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1517000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1517000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -17439000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -17439000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 19432000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 19432000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 17915000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 17915000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -11378000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -11378000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 42454000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 42454000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 57824000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 57824000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 15370000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 15370000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 57273000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 57273000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -722000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -722000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -58401000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -58401000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 22677000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 22677000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 31323000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 31323000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 8646000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 8646000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 41218000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 41218000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 9895000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 9895000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 9479000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 9479000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -60546000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -60547000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -81120000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -81121000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -20574000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -20574000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -91755000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -10635000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -86509000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 21615000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 45463000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 23848000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax",
        "description": "Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -9994000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -8329000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -8329000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -359000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -1831000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -1473000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -2750000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -919000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -2779000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -2779000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 316000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 815000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 570000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 2202000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 569000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 1388000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 26000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 2489000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -544000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 287000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -103000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 3178000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 3178000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 719000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 719000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1287000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1287000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 568000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 568000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 2236000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 2236000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 949000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 949000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2883000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2883000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2883000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 576000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 576000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1285000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1285000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 709000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 709000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 2006000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 2006000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 721000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 721000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2908000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2908000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2908000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 700000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 700000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1429000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1429000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 729000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 729000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1429000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1429000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1429000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1429000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1429000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax": {
        "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax",
        "description": "Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -2496000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -739000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -739000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 235000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -186000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -421000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -276000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -90000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 191000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 191000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 191000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 493000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 493000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 1333000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 1333000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 840000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 840000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1434000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1434000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 101000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 101000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1858000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1858000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1858000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 441000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 441000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 791000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 791000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 350000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 350000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1373000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1373000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 582000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 582000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1770000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1770000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1770000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 354000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 354000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 789000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 789000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 435000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 435000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1210000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1210000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 421000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 421000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1772000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1772000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1772000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 437000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 437000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 892000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 892000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 455000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 455000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 892000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 892000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 892000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 892000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 892000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax": {
        "label": "Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax",
        "description": "Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -3946000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -3289000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -3289000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -141000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -722000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -582000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -1086000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -364000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -1097000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -1097000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 125000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 1000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 322000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 225000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 869000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 225000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 548000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 11000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1055000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -214000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 186000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -43000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1320000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1320000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 278000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 278000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 496000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 496000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 218000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 218000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 863000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 863000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 367000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 367000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1113000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1113000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1113000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 222000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 222000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 496000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 496000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 274000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 274000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 796000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 796000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 300000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 300000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1136000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1136000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1136000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 263000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 263000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 537000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 537000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 274000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 274000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 537000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 537000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 537000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 537000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 537000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossNetOfTax": {
        "label": "Other Comprehensive Income (Loss), Net of Tax",
        "description": "Amount after tax and reclassification adjustments of other comprehensive income (loss).",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -11580000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -30045000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -30045000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 158000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4167000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 4009000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 14588000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 10421000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -15532000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -15532000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -15532000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2201000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2201000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -18070000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -18070000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": -20271000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -20271000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -13439000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -13439000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4631000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 4631000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56838000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56838000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 56838000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 8674000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 8674000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 29325000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 29325000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 20651000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 20651000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 23410000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 23410000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -5915000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -5915000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -27713000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -27713000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -27713000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 17570000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 17570000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1822000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1822000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -15748000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -15748000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 18105000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 18105000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 16283000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 16283000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -11459000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -11459000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -11459000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 40616000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 40616000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 49413000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 49413000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 8797000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 8797000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 49656000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 49656000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 243000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 243000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -70752000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -70752000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -70752000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 24251000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 24251000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 32349000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 32349000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 8098000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 8098000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 42868000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 42868000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 10519000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 10519000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12898000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12898000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12898000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -57977000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -57978000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -72292000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -72293000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -14315000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -14315000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -75229000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -75230000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -2937000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -2937000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -62842000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -62842000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -62842000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 28327000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 28327000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 54456000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 54456000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 26129000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 26129000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 63415000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 63415000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 8959000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 8959000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 108464000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 108464000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 108464000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 101111000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 101111000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 117059000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 117059000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 15948000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 15948000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 112967000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 112967000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -4092000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -4092000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 138986000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 138986000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -45934000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -34383000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 11551000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -44400000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -10017000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -2487000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease": {
        "label": "Other Comprehensive Income (Loss), Net of Tax (Deprecated 2012-01-31)",
        "description": "This element represents Other Comprehensive Income or Loss, Net of Tax, for the period. Includes deferred gains or losses on qualifying hedges, unrealized holding gains or losses on available-for-sale securities, minimum pension liability, and cumulative translation adjustment. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 13644000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -2900000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 80701000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 11931000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 128262000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 106701000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 137605000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 135550000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 163575000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 163575000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 163575000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -11580000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 181464000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 59301000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -3378000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 7078000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 91057000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 10456000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 4002000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 168997000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 168997000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": -3076000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -30045000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 158000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 4167000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 4009000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 14588000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 10421000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax",
        "description": "Amount, after tax, before reclassification adjustment, of (increase) decrease in accumulated other comprehensive income of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 2032000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 13884000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 13884000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6982000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6982000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6982000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -61867000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -61867000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -96230000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax",
        "description": "Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -7071000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -11236000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -11236000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -17195000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -17195000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -17195000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -5358000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -5358000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -5358000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -11586000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -11586000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -11586000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -7069000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -7069000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -7069000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -9720000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -9720000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -9720000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -13981000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -13981000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -2755000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -5490000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": -2735000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -8235000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -2745000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -10981000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -6264000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -6264000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -12662000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": -12662000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": -6398000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": -6398000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -18994000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -18994000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -6332000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -6332000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -6529000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -13547000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": -7018000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -20320000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -6773000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax",
        "description": "Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1706000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 31369000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 31369000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1698000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -3395000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -1697000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -5091000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -1696000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 20125000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 20125000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 20125000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -2619000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -2619000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -5231000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -5231000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": -2612000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -2612000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -7468000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -7468000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -2237000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -2237000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -85588000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -85588000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -85588000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -977000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -977000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -1953000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -1953000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -976000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -976000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -2456000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -2456000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -503000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -503000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 44672000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 44672000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 44672000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -1763000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -1763000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -3527000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -1764000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -5365000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": -1838000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -6992000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -6992000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -6992000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -1020000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 40894000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 40894000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 40894000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 2032000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 2032000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 13884000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax",
        "description": "Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12945000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 32012000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -32012000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 20049000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -20049000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -20049000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 55023000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 55023000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 97880000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax",
        "description": "Amount, after reclassification adjustment, of tax (expense) benefit for (increase) decrease in accumulated other comprehensive income of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2669000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 22959000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1092000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -2185000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -1093000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -3277000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -1092000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 17354000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -1685000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -1685000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -3367000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -3367000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": -1682000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -1682000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -5428000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -5428000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -2061000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -2061000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -622000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -622000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -1244000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -1244000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -622000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -622000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -1563000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -1563000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -319000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -319000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -1123000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -1123000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -2246000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -1123000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -3324000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": -1078000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -632000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax (Deprecated 2013-01-31)",
        "description": "Before tax amount of the income statement impact of the reclassification adjustment for unrealized gain (loss) realized upon the sale of available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -2373000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 262000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -3000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -3000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -2322000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -58000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax (Deprecated 2013-01-31)",
        "description": "Tax effect of the income statement impact of the reclassification adjustment for unrealized gain (loss) realized upon the sale of available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -1436000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 159000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -1000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -1000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -917000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -23000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax",
        "description": "Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -262000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 34000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 31000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2322000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2322000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -29096000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29096000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29096000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5126000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5126000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5273000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5273000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 147000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 147000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10837000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10837000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5564000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 5564000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 10817000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4628000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4628000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 17157000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 17157000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12529000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12529000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17509000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 17509000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 352000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 352000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 26673000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -24000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -24000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3327000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3327000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 3351000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 3351000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4664000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4664000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1337000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1337000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4293000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 351000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5719000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6855000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6855000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1136000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1136000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 7115000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 19795000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 19795000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 33547000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 33547000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 13752000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 13752000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 54972000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 54972000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 21425000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 21425000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60253000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60253000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9207000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 25037000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15830000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 33119000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8082000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 33119000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax",
        "description": "Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3222000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 73000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 6692000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 3470000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 2858000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 10594000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 10594000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 7736000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 7736000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10926000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10926000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 161000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 161000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -15000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -15000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2096000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2096000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2111000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2111000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 2938000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 2938000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 842000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 842000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 4404000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 4404000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 5278000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 874000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax",
        "description": "Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -159000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 13000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 12000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 917000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 917000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -11224000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11224000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11224000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1977000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1977000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2051000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2051000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 74000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 74000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4145000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4145000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 2094000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 2094000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4138000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4138000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4138000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1770000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1770000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 6563000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 6563000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4793000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4793000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 6583000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 6583000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 191000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 191000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 9869000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 9869000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 9869000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -9000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -9000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1231000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1231000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1240000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1240000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 1726000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 1726000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 495000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 495000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1588000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1588000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1588000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 81000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 81000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 81000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1315000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1315000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 1315000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 1315000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1577000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1577000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 262000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 262000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1636000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1636000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1636000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4553000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4553000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7716000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7716000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 3163000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 3163000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 12644000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 12644000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4928000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4928000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13858000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13858000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2118000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 5759000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 3641000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 7617000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1858000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 7617000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax",
        "description": "Amount before tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -7107000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -2294000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -769000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -3095000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -2463000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -831000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -3281000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax",
        "description": "Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -2806000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -906000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -304000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -1222000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -1044000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -400000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -1363000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax",
        "description": "Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss related to net period benefit cost (credit) for pension and other postretirement defined benefit plans.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5773000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 2887000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 8689000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 2916000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1652000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 3534000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 3534000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1882000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1882000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5302000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5302000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1768000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1768000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2500000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2500000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 4960000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 4960000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2460000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2460000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 7290000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 7290000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 2330000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 2330000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 3337000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 3337000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 6991000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 6991000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 3654000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 3654000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 10486000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 10486000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3495000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3495000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2755000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5490000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2735000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 8235000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 2745000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax",
        "description": "Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -8368000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -2788000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -4304000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -8598000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -4294000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -12896000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -12896000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -4298000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -4298000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -1599000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -1599000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -3197000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -3197000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -1598000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -1598000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -4019000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -4019000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -822000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -822000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -2886000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -2886000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -5773000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5668000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -2887000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 2835000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -8689000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 8531000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": -2916000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 2863000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -1652000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1600000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 3430000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 3430000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1830000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1830000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5144000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5144000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1714000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1714000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2234000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2448000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 4855000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 4855000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2407000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 2407000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 7132000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 7132000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 2277000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 2277000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 3317000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 3317000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 6951000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 6951000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 3634000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 3634000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 10427000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 10427000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3476000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 3476000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2741000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5462000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2721000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 8192000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 2730000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax",
        "description": "Amount, after tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net periodic benefit cost (credit) of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3527000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1764000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 5365000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1838000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1020000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 2183000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 2183000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1163000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1163000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 3309000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 3309000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1126000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1126000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1559000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1559000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3122000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3122000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1563000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1563000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4588000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4588000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1466000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 1466000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2569000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2569000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5383000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5383000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 2814000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 2814000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 8074000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 8074000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 2691000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 2691000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2121000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2121000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 4227000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 4227000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2106000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 2106000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6341000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 6341000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 2114000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 2114000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4823000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4823000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 9749000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 9749000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4926000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4926000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 14624000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 14624000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4875000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4875000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 5027000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 10431000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5404000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 15646000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 5215000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax",
        "description": "Amount of tax (expense) benefit for reclassification adjustment from accumulated other comprehensive (income) loss of defined benefit plan.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 2769000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 4400000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 4400000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 6689000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 6689000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 6689000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2084000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2084000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2084000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2246000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1123000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 3324000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1078000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4988000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4988000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 4988000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 632000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1351000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1351000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 719000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 719000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1993000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1993000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 642000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 642000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2616000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2616000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2616000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 941000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 941000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1838000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1838000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 897000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 897000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 2702000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 2702000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 864000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 864000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3596000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3596000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3596000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 768000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 768000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 1608000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 1608000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 840000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 840000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 2412000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 2412000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 804000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 804000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 3216000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 3216000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 634000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 634000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1263000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1263000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 629000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 629000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1894000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1894000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 631000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 631000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2525000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1441000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1441000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 2913000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 2913000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 1472000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 1472000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 4370000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 4370000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 1457000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 1457000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1502000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 3116000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 1614000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 4674000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1558000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax (Deprecated 2013-01-31)",
        "description": "Before tax amount of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 5869000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 7107000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 749000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1525000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 776000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3095000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 813000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 1632000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 819000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax (Deprecated 2013-01-31)",
        "description": "Tax effect of the income statement impact of the reclassification adjustment of accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges realized in net income. Also includes reclassification adjustments of an entity's share of an equity investee's deferred hedging gain (loss) realized in net income.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2317000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2806000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 296000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 602000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 306000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1222000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 321000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 644000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 323000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Tax (Deprecated 2013-01-31)",
        "description": "Tax effect of the income statement impact of the reclassification adjustment for actuarial gain (loss) recognized as a component of net periodic benefit cost.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1570000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2769000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 4400000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentNetOfTax": {
        "label": "Other Comprehensive Income (Loss), Minimum Pension Liability Net Adjustment, Net of Tax (Deprecated 2012-01-31)",
        "description": "The after-tax amount of the change in the additional pension liability not yet recognized pursuant to FAS 87 par 37 and 38 as a net periodic pension cost. If the additional pension liability required to be recognized exceeds the unrecognized prior service costs, then the excess (which is the net loss not yet recognized as net periodic pension cost) is to be recorded as a reduction of other comprehensive income, before adjusting for tax effects. If in a subsequent measurement, the amount of minimum liability is eliminated or adjusted, this adjustment is offset against other comprehensive income in Accumulated Comprehensive Income. This line also includes changes in an entity's share of an equity investee's Increase or Decrease in additional pension liability not yet recognized as a net periodic pension cost. Eliminated upon adoption of FAS 158.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 86380000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -32684000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -1830000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -1830000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -1830000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1706000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -1003000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -2005000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -3008000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -3008000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeMinimumPensionLiabilityNetAdjustmentTax": {
        "label": "Other Comprehensive Income (Loss), Minimum Pension Liability Net Adjustment, Tax (Deprecated 2012-01-31)",
        "description": "The tax effect of the amount of the change in the additional minimum pension liability not yet recognized pursuant to FAS 87 as a net periodic pension cost. If the additional pension liability required to be recognized exceeds the unrecognized prior service costs, then the excess (which is the net loss not yet recognized as net periodic pension cost) is to be recorded as a separate component in other comprehensive income, before adjusting for tax effects. In a subsequent measurement, the elimination or adjustment to the amount of the minimum pension liability recorded in accumulated other comprehensive income is included in this line. Eliminated upon adoption of FAS 158.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -55581000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 21019000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -1178000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -1178000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 1178000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -1099000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 645000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1291000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1936000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1936000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax (Deprecated 2012-01-31)",
        "description": "Pre tax reclassification adjustment for gains or losses realized upon the sale of securities.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 104000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2373000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -449000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -545000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": -96000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -291000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 254000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -262000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 3000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 3000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 34000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 31000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax (Deprecated 2012-01-31)",
        "description": "Reclassification adjustment for unrealized gains or losses realized upon the sale of securities, after tax.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 684000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 575000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1398000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1398000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 1398000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1181000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -272000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -330000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -198000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -198000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax (Deprecated 2012-01-31)",
        "description": "Tax effect on the reclassification adjustment for gains or losses realized upon the sale of securities during the period.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 63000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1436000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -177000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -215000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": -38000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -93000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 122000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -159000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 1000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 13000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 12000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax (Deprecated 2012-01-31)",
        "description": "Pre tax reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -5234000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -5869000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -1458000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -2931000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": -1473000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -3961000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": -1030000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -7107000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -749000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -1525000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": -776000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -2294000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -769000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Tax (Deprecated 2012-01-31)",
        "description": "Tax effect on reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -2067000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 447000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -370000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -900000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -900000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 900000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -2317000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 771000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 177000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 576000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 1148000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 215000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 572000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 1564000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 93000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 93000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 416000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -2806000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 296000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 602000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 306000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 906000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 304000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax (Deprecated 2013-01-31)",
        "description": "Before tax amount of the income statement impact of the reclassification adjustment for actuarial gain (loss) recognized as a component of net periodic benefit cost.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 3814000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4010000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4010000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 7071000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 7071000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 2790000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 5580000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2790000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 11236000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4304000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 8598000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 4294000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax": {
        "label": "Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Tax (Deprecated 2012-01-31)",
        "description": "For each annual statement of income presented, the tax effect of the net gain (loss) recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -1494000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -1570000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -2769000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax": {
        "label": "Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax",
        "description": "Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -3216000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 2559000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 1278000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 3208000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -5942000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -876000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -3596000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -3596000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -5383000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -5383000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -5383000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -2496000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -308000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1039000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -186000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -2444000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -2444000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax": {
        "label": "Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax",
        "description": "Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -3153000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -3153000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -1595000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -1595000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax": {
        "label": "OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax",
        "description": "Amount, before tax and adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -38809000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -10201000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -10201000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -9139000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 8097000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 17236000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 5344000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": -2753000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3108000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3108000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 3108000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -2898000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -2898000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1593000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1593000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 4491000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 4491000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 16376000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 16376000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 14783000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 14783000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9566000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9566000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 9566000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -1418000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -1476000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -40468000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -40468000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": -38992000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -38992000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -36998000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -36998000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 3470000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 3470000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -50441000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -50441000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -50441000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 11899000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 11899000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 43449000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 43449000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 31550000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 31550000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 32006000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 32006000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -11444000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -11444000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -4121000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 54071000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 54071000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 30415000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 30415000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1189000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1189000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -29226000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -29226000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 29420000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 29420000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 28231000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 28231000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -22030000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -22030000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -22030000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 68033000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 68033000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 92209000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 92209000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 24176000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 24176000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 90631000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 90631000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -1577000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -1577000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -21530000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -21530000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -21530000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 36096000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 36096000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 49867000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 49867000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 13771000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 13771000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 65619000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 65619000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 15752000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 15752000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 28166000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 28166000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 28166000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -78634000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -78635000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 4155000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 4154000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 82789000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 82789000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -9655000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -9656000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -13810000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -13810000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 29170000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 29170000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 29170000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 28071000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 28071000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 59042000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 59042000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 30971000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 30971000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 62974000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 62974000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 3932000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 3932000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 64644000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 64644000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 64644000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 144843000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 144843000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 172909000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 172909000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 28066000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 28066000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 182690000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 182690000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 9781000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 9781000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 155009000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 155009000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -56501000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -31903000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 24598000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -43173000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -11270000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -80951000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax": {
        "label": "OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax",
        "description": "Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 12182000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -20322000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -17908000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -23961000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -23961000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 1650000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 5988000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 6563000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 5567000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 5567000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 5567000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -7378000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -7378000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -6197000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -5692000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -5420000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 5259000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 4929000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 10679000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 3240000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 3240000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 3438000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": -1821000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2063000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 2063000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 2063000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1775000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1775000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 958000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 958000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2733000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 2733000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 9773000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 9773000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 8815000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 8815000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 4402000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 4402000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 4402000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -911000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -911000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -24634000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -24634000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": -23723000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -23723000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -22341000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -22341000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2293000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 2293000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -30608000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -30608000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -30608000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 7256000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 7256000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 26581000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 26581000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 19325000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 19325000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 19581000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 19581000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -7000000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -7000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 15189000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 15189000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 15189000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 15453000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 15453000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -2494000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -2494000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -17947000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -17947000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 11530000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 11530000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 14024000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 14024000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -20223000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -20223000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -20223000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 39159000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 39159000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 46338000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 46338000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 7179000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 7179000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 45455000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 45455000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -883000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -883000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -30750000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -30750000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -30750000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 22692000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 22692000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 29227000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 29227000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 6535000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 6535000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 38280000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 38280000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 9053000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 9053000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14930000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14930000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14930000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -60546000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -60547000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 3201000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 3200000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 63747000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 63747000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -7434000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -7435000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -10635000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -10635000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 22191000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 22191000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 22191000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 21615000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 21615000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 41059000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 41059000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 19444000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 19444000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 43211000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 43211000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 2152000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 2152000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 44297000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 44297000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 44297000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 96288000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 96288000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 107310000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 107310000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 11022000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 11022000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 98343000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 98343000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -8967000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": -8967000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 72962000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 72962000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -50595000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -43844000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 6751000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -58745000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -14901000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -87834000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax": {
        "label": "OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, Tax",
        "description": "Amount, before adjustment, of tax expense (benefit) for unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes tax expense (benefit) for unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 7753000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 13108000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 12086000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -14889000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -15365000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 1173000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 2238000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 2608000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1988000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1988000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 3632000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -3760000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -3760000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -4425000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 3447000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -3447000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 3168000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 3168000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 6615000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2104000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2104000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2104000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": -1064000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1148000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1148000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1148000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1123000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -1123000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 633000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 633000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 1756000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 1756000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 6582000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 6582000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 5949000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 5949000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3759000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3759000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3759000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -542000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -565000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -15834000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -15834000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": -15269000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -15269000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -14657000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -14657000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 1177000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 1177000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -19833000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -19833000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -19833000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4643000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4643000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 16868000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 16868000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 12225000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 12225000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 12425000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 12425000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -4444000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -4444000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -1438000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 21010000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 21010000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 11813000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 11813000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 461000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 461000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -11352000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -11352000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 11198000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 11198000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 10737000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 10737000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -8486000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -8486000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -8486000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 26016000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 26016000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 35277000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 35277000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 9261000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 9261000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 34250000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 34250000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -855000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -855000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -7584000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -7584000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -7584000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 13419000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 13419000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 18544000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 18544000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 5125000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 5125000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 24401000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 24401000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 5857000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 5857000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10531000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10531000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10531000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -18088000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -18088000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 954000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 954000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 19042000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 19042000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -2221000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -2221000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -3175000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -3175000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6709000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6709000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 6709000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 6456000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 6456000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 13579000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 13579000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 7123000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 7123000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 14485000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 14485000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 906000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 906000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14868000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14868000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14868000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 33313000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 33313000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 39768000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 39768000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 6455000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 6455000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 42019000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 42019000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2251000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 2251000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 35652000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 35652000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -12995000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -7337000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5658000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -9930000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -2593000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -18619000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherIntangibleAssetsNet": {
        "label": "Other Intangible Assets, Net",
        "description": "Amount after accumulated amortization of finite-lived and indefinite-lived intangible assets classified as other.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 1247000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 89922000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 89922000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 71635000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 71635000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 71635000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 57625000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 57625000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 57625000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 51151000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 51151000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 51151000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 48232000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 48232000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 48232000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 43386000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 43386000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 43386000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 29667000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 29667000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 18719000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "OtherLaborRelatedExpenses": {
        "label": "Other Labor-related Expenses",
        "description": "Amount of labor-related expenses classified as other.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 58899000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 33092000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 15773000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 48482000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 15390000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 64390000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 64390000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 18311000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 34150000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 34150000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 15839000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 15839000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 48605000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 48605000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 48605000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 14455000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 14455000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 14455000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 64733000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 64733000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 64733000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 19649000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 19649000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 38357000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 38357000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 18708000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 18708000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 55510000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 55510000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 55510000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 17153000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 17153000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 17153000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 72526000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 72526000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 72526000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 20249000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 20249000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 40807000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 40807000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 20558000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 20558000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 59548000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 59548000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 18741000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 18741000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 78861000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 78861000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 78861000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 25019000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 25019000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 48247000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 48247000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 23228000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 23228000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 70136000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 70136000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 21889000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 21889000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 90479000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 90479000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 90479000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 20100000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 20100000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 39872000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 39841000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 19772000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 19741000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 59638000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 59638000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 19797000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 19797000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 79898000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 79898000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 79898000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 30146000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 31218000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 57358000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 59220000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 27212000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 28002000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 86341000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 86341000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 27121000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 27121000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 113309000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 113309000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 113309000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 27350000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 27350000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 53011000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 53011000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 25661000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 25661000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 79761000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 79761000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 26750000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 26750000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 104518000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 104518000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 94340000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 29293000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 27178000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 56388000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 52560000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 27095000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 25383000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 83418000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 77976000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 27030000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 25416000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 113231000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 105975000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 105975000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 32091000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 32091000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 61806000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 61806000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 29715000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 29715000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 90656000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 90656000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 28850000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 28850000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 118203000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 118203000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 118203000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 32535000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 32535000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 62732000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 62732000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 30197000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 30197000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 91090000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 91090000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 28358000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 28358000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 120501000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 120501000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 120501000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 38511000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 38511000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 68875000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 68875000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 30364000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 30364000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 100663000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 100663000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 31788000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 31788000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 132244000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 132244000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 35725000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 71023000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 35298000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 103169000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 32146000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 135659000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherLiabilities": {
        "label": "Other Liabilities",
        "description": "Amount of liabilities classified as other.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 189862000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 192872000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 129610000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 129610000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 129610000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 187946000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 164580000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 162525000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 116198000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 116198000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 116198000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 81885000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 81885000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 81885000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 81885000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 81885000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 81885000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 99128000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 100047000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 100026000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 100945000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 134916000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 134916000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 135430000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 140270000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 140270000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 140270000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 140270000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 178209000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 164202000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 164202000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 164573000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 164573000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 156338000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 218553000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 218553000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 218553000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 218553000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 218553000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 251286000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 224575000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 243159000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 116785000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 116785000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 116785000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 116785000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 116785000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 117189000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 139587000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 139982000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 253903000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 253903000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 253903000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 253903000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 253903000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 258767000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 270238000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 278708000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 247729000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 247729000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 247729000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 247729000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 247729000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 272652000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 263607000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 296650000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 283629000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 283629000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 283629000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 283629000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 283629000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 293841000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 310061000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 290768000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 261784000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 261784000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 261784000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 261784000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 261784000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 243441000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 273956000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 202297000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 249443000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 249443000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 249443000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 249443000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 249443000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 283396000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 337537000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 349908000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 367810000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 367810000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 367810000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 367810000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 367810000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 332991000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 381485000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 380635000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 391552000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 391552000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 391552000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 391552000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 391552000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 345178000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 371140000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 372116000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 381326000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 381000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 381000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 381000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 381000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1988000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 2173000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2434000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2588000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 2588000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 2588000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 2588000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 2588000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 2588000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 8172000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 7361000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 8149000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 7906000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 7906000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 7906000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 7906000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 7906000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 7906000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 7687000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 7628000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 7754000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 8196000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 8196000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 8196000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 8196000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 8196000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 7651000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 8233000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 8311000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 8726000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 8726000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 7823000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "OtherNoninterestExpense": {
        "label": "Other Noninterest Expense",
        "description": "Amount of noninterest expense classified as other.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 154895000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 69005000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 33329000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 110345000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 41340000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 151744000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 151744000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 39880000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 85598000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 85598000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 45718000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 45718000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 133092000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 133092000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 133092000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 47494000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 47494000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 47494000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 187480000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 187480000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 187480000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 45158000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 45158000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 95558000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 95558000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 50400000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 50400000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 151018000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 151018000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 151018000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 55460000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 55460000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 55460000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 204936000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 204936000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 204936000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 42947000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 42978000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 85971000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 86364000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 43024000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 43400000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 133106000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 134911000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 47135000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 48547000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 179811000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 179811000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 179315000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 48491000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 48491000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 94976000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 94976000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 46485000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 46485000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 144108000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 144108000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 49132000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 49132000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 193388000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 193014000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 193014000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 43794000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 41895000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 93238000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 89506000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 49444000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 47611000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 141779000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 141779000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 51898000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 51898000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 207842000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 210629000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 152835000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 62585000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 62491000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 130314000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 130314000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 67823000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 67823000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 199967000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 199967000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 69653000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 69653000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 269858000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 189892000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 172440000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 66507000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 45336000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 142563000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 93666000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 76056000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 50759000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 215115000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 133015000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 72552000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 44427000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 200047000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 180715000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 145907000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 42206000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 33621000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 88546000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 75812000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 49105000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 42191000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 136145000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 123216000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 50687000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 47403000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 186199000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 142430000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 142430000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 43364000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 35168000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 86656000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 70570000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 43292000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 35402000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 128383000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 105000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 41727000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 34430000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 147063000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 147063000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 147063000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 33710000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 33710000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 67868000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 67868000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 34158000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 34158000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 98535000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 98535000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 30667000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 30667000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 139283000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 139283000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 139283000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 38751000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 38751000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 72868000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 72868000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 34117000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 34117000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 108256000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 108256000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 35388000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 35388000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 145117000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 145117000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 117000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 26917000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 26000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 58462000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 42000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 31545000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 22000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 91745000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 66000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 33283000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 24000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 129526000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 94000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 94000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 94000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 56000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 33000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 99000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 100000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 67000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 67000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 169000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 170000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 70000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 70000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 237000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 240000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 240000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 240000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 75000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 75000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 167000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 167000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 92000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 92000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 263000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 266000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 96000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 99000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 377000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 377000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 377000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 377000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 100000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 100000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 207000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 207000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 107000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 107000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 318000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 318000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 111000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 111000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 460000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 460000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 110000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 110000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 239000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 129000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 348000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 109000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 466000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 102000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherRealEstate": {
        "label": "Other Real Estate",
        "description": "Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 198998000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2011-12-31",
              "val": 198998000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2011-12-31",
              "val": 198998000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2011-12-31",
              "val": 198998000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 190510000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 166835000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 161468000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2012-12-31",
              "val": 146090000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 146729000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2013-03-31",
              "val": 146729000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 121775000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2013-06-30",
              "val": 121775000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 99107000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2013-09-30",
              "val": 99107000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 83979000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 86359000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2014-03-31",
              "val": 86359000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 75287000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2014-06-30",
              "val": 75287000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 72458000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-09-30",
              "val": 72458000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 93436000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 89992000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 89992000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 73248000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 73248000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 69859000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 69859000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 65559000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 65068000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 65068000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 67089000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 67089000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 68964000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 68964000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2016-12-31",
              "val": 61231000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 56491000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 56491000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 60781000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 60781000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 53988000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-09-30",
              "val": 53988000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2017-12-31",
              "val": 51097000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 48089000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2018-03-31",
              "val": 48089000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 46633000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-06-30",
              "val": 46633000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 43601000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-09-30",
              "val": 43601000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2018-12-31",
              "val": 48030000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 43306000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2019-03-31",
              "val": 43306000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 46236000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2019-06-30",
              "val": 46236000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 46253000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2019-09-30",
              "val": 46253000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2019-12-31",
              "val": 46591000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 55707000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2020-03-31",
              "val": 55707000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 53850000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-06-30",
              "val": 53850000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 52789000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-09-30",
              "val": 52789000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 50890000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 50890000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 50890000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 50890000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 50890000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 48512000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 43685000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 40649000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 39328000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 46000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 62000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 60000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 58000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 56000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 56000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 53000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 56000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "OtherRealEstateAdditions": {
        "label": "Other Real Estate, Additions",
        "description": "Additions of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 26840000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 80413000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 117363000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 140645000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 38008000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 38133000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 57930000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 57930000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 79121000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 79121000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 92942000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 92942000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 16423000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4832000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 36671000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 25080000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 53727000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 42136000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 66282000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 66282000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 21328000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 21328000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 30391000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 30391000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 44224000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 44224000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 55223000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 55223000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 9980000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 9980000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 21280000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 21280000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 31517000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 31517000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 35272000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 35272000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5822000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5822000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 21891000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 21891000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 26926000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 26926000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 34980000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 34980000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 6582000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 6582000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11868000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11868000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 17013000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 17013000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 24997000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 24997000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3133000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3133000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 7894000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 7894000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 15426000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 15426000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 21684000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 21684000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5987000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5987000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 9184000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 9184000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 18428000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 18428000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 26822000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 26822000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 7106000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 11340000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 16454000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 27755000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherRealEstateCovered": {
        "label": "Other Real Estate, Covered",
        "description": "Carrying amount of other real estate covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 148599000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 142418000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-12-31",
              "val": 102577000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 102577000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2012-12-31",
              "val": 102577000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 101901000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-09-30",
              "val": 58769000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 47081000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 47081000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 47081000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 47081000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 47081000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 47081000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 41855000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 40136000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 29272000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-09-30",
              "val": 29272000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 22982000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 17302000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 17302000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 12890000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 12890000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 8152000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 8152000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 6817000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 9734000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 9734000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 484000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 484000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 591000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 591000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 472000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 472000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 472000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 472000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 472000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 349000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 162000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 148000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 271000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "OtherRealEstateCoveredAdditions": {
        "label": "Other Real Estate, Covered, Additions",
        "description": "Additions of other real estate covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 20532000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 61630000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 89811000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 105059000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 29370000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 29370000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 41315000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 41315000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 50365000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 50365000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 59034000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 59034000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 1514000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 1514000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 16186000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 16186000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 25235000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 25235000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29708000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 29708000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 4244000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 4244000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5833000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 5833000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 6202000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 6202000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 7357000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 7357000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3936000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 3936000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 4734000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 4734000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 4851000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 4851000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4888000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4888000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 16000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 97000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 260000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "OtherRealEstateCoveredDisposals": {
        "label": "Other Real Estate, Covered, Disposals",
        "description": "Disposals of other real estate covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 17221000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 81589000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 100620000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 124435000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 27316000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 27316000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 53676000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 53676000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 78597000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 78597000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 96744000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 96744000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4512000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4512000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 18522000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 18522000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 27756000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 27756000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 38753000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 38753000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 8970000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 8970000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 12962000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 12962000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 17539000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 17539000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 19629000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 19629000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 523000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 523000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 781000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 781000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 781000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 781000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 937000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 937000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 71000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 273000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 369000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 369000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "OtherRealEstateCoveredValuationAdjustments": {
        "label": "Other Real Estate, Covered, Valuation Adjustments",
        "description": "Valuation adjustments made to other real estate covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 9492000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 11259000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 21385000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 26646000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2730000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2730000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 5383000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 5383000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 15576000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 15576000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 17786000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 17786000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2228000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2228000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 4609000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 4609000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 9751000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 9751000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 10853000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 10853000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 954000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 954000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 857000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 857000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1387000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1387000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1478000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1478000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 496000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 496000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 570000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 570000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 580000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 580000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 580000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 580000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 52000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 53000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 52000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 92000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "OtherRealEstateDisposals": {
        "label": "Other Real Estate, Disposals",
        "description": "Disposals of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 25378000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 98205000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 125580000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 157999000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 33539000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 33663000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 74702000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 74702000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 107863000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 107863000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 132912000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 132912000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 10366000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 10366000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 37672000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 37672000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 51282000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 51282000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 87688000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 87688000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 22543000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 22543000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 47286000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 47286000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 64151000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 64151000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 76482000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 76482000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 8070000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 8070000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 15509000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 15509000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 24183000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 24183000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 34178000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 34178000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 9119000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 8845000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 19388000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 20236000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 28653000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 31072000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 38366000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 40709000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 8380000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 7997000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 15769000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 15769000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 23488000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 23488000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28128000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28128000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 6934000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 6934000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 11012000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 11012000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 17595000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 17595000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 24432000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 24432000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5321000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5321000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 9497000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 9497000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 18645000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 18645000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 26726000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 26726000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 8102000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 16600000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 24311000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 35703000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherRealEstateNonCovered": {
        "label": "Other Real Estate, Non Covered",
        "description": "Carrying amount of other real estate not covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 50399000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 48092000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-12-31",
              "val": 43513000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 43513000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2012-12-31",
              "val": 43513000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 44828000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-09-30",
              "val": 40338000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 36898000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 36898000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 36898000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 36898000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 36898000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 36898000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 44504000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 35151000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 43186000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-09-30",
              "val": 43186000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 70454000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 72690000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 72690000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 60358000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 60358000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 61707000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 61707000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 58742000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 55334000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 55334000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 66605000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 66605000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 68373000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 68373000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 60759000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 60759000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 60759000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 60759000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 60759000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 56142000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 60619000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 53840000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 50826000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "OtherRealEstateNonCoveredAdditions": {
        "label": "Other Real Estate, Non Covered, Additions",
        "description": "Additions of other real estate not covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 6308000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 18783000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 27552000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 35586000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 8638000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 8763000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 16615000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 16615000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 28756000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 28756000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 33908000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 33908000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 14909000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3318000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 20485000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 8894000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 28492000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 16901000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 36574000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 36574000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 17084000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 17084000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 24558000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 24558000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 38022000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 38022000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 47866000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 47866000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 6044000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 6044000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 16546000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 16546000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 26666000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 26666000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 30384000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 30384000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5822000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 21875000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 26829000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 34720000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "OtherRealEstateNonCoveredDisposals": {
        "label": "Other Real Estate, Non Covered, Disposals",
        "description": "Disposals of other real estate not covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 8157000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 16616000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 24960000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 33564000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 6223000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 6347000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 21026000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 21026000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 29266000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 29266000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 36168000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 36168000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 5854000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 5854000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 19150000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 19150000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 23526000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 23526000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 48935000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 48935000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 13573000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 13573000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 34324000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 34324000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 46612000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 46612000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 56853000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 56853000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 7547000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 7547000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 14728000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 14728000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 23402000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 23402000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 33241000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 33241000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 9048000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 19115000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 28284000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 37997000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "OtherRealEstateNonCoveredValuationAdjustments": {
        "label": "Other Real Estate, Non Covered, Valuation Adjustments",
        "description": "Valuation adjustments made to other real estate not covered by loss sharing agreements not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations that may also be included in real estate owned. Excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure by banks.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 458000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 3112000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 7928000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 8908000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 1100000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 1101000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 2160000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 2160000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 2665000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 2665000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 4355000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 4355000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 1449000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 1449000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 3082000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 3082000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 4215000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 4215000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 5219000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 5219000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1275000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1275000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2436000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2436000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 2263000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 2263000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5140000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5140000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 2235000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 2235000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 3815000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 3815000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 4894000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 4894000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 6387000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 6387000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1391000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2955000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 5519000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 6711000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            }
          ]
        }
      },
      "OtherRealEstateValuationAdjustments": {
        "label": "Other Real Estate, Valuation Adjustments",
        "description": "Valuation adjustments made to other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This excludes real estate assets taken in settlement of troubled loans through surrender or foreclosure.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 9950000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 14371000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 29313000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 35554000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3830000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 3831000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 7543000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 7543000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 18241000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 18241000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 22141000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 22141000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3677000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 3677000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 7691000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 7691000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 13966000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 13966000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 16072000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 16072000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 2229000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 2229000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3293000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3293000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 3650000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 3650000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6618000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 6618000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 2731000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 2731000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 4385000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 4385000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5474000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 5474000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 6967000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 6967000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1443000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1717000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 3008000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2160000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 5571000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 3152000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 6803000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4460000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1210000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1593000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2698000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2698000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 3156000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 3156000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 4390000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 4390000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 923000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 923000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2289000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2289000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3221000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3221000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4150000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4150000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1363000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1363000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 2241000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 2241000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 3398000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 3398000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 5610000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 5610000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1382000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1945000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 2384000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3614000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "OtherShortTermInvestments": {
        "label": "Other Short-term Investments",
        "description": "Amount of short-term investments classified as other.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 229668000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 219886000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 723260000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 723260000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 723260000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 866562000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 736896000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 736896000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 1049158000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 1049158000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 1049158000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 398390000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 398390000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 398390000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 398390000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 398390000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 398390000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 585286000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 585286000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 741654000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 741654000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 410002000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 410002000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 410002000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 434975000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 434975000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 434975000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 434975000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 434975000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 752334000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 752334000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 984536000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 984536000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 688196000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 443180000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 443180000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 443180000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 443180000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 443180000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 954232000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 1039925000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 1354131000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 859324000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 859324000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 859324000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 859324000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 859324000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 1161469000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 1118474000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 707352000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 1724919000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1724919000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 1724919000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 1724919000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 1724919000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 2458923000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 1703341000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2368132000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 2063132000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 2063132000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 2063132000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 2063132000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 2063132000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 2871105000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 2276080000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 2997086000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 1872594000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 1872594000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 1872594000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 1872594000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 1872594000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 2736514000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 2882789000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 2432233000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 1387927000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 1387927000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 1387927000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 1387927000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 1387927000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 1946882000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 1223311000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 943025000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 797406000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 797406000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 797406000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 797406000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 797406000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 1386525000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 1640264000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 949899000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 1107844000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 1107844000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 1107844000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 1107844000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 1107844000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 688518000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 3107575000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 3137945000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 4347336000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 4347336000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 4347336000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 4347336000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 7588757000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 7871382000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-12-31",
              "val": 9114660000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities": {
        "label": "Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities",
        "description": "The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 26000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 45000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 45000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 45000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 45000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            }
          ]
        }
      },
      "PaymentsForOriginationAndPurchasesOfLoansHeldForSale": {
        "label": "Payments for Origination and Purchases of Loans Held-for-sale",
        "description": "The aggregate amount of cash outflow for loans purchased and created with the intention to resell them in the near future.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -475874000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -483656000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -614857000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 751154000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -751154000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -114974000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -255495000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -255495000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 420346000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 420346000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -420346000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 605302000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 605302000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -605302000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -87719000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 87719000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 182184000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -182184000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 333860000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 333860000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 333860000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 513253000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 513253000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 513253000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 135897000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 135897000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 275140000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 275140000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 415527000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 415527000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 575705000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 575705000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 575705000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 117981000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 117981000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 223128000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 223128000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 323665000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 323665000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 393908000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 393908000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 393908000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 67862000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 67862000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 123144000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 123144000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 198134000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 198134000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 377993000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 377993000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 377993000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 126547000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 126547000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 355819000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 355819000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 542836000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 542836000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 685631000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 685631000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 685631000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 144895000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 144895000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 361652000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 361652000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 589313000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 589313000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 795963000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 795963000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 795963000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 134932000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 134932000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 299136000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 299136000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 471862000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 471862000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 622503000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 622503000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 622503000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 131353000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 131353000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 304580000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 304580000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 456193000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 456193000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 593307000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 593307000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 593307000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 128949000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 128949000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 328481000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 328481000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 518894000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 518894000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 736015000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 736015000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 698044000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 205986000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 205986000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 503190000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 503190000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 775900000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 775900000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1078096000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1042292000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 315451000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 631104000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 911995000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1123312000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "PaymentsForProceedsFromLoansAndLeases": {
        "label": "Payments for (Proceeds from) Loans and Leases",
        "description": "The net cash outflow or inflow for the increase (decrease) in the beginning and end of period of loan and lease balances which are not originated or purchased specifically for resale. Includes cash payments and proceeds associated with (a) loans held-for-investment, (b) leases held-for-investment, and (c) both.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 851848000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -71765000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -95736000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -49677000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -49677000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -200380000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -307745000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -311122000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -526380000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -526380000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -526380000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -926122000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -926122000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -926122000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -119185000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -119185000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -260861000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -260861000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -311591000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -311591000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -310218000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -473974000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -473974000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -473974000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -277719000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -277719000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -468503000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -468503000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -592015000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -592015000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -627806000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -627806000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -627806000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -269428000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -269428000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -325057000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -325057000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -364916000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -364916000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -323436000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -323436000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -323436000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4788000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4788000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 57271000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 57271000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 329925000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 329925000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 814372000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 814372000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 814372000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 168341000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 168341000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 566524000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 566524000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 928132000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 928132000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1311447000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1311447000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1311447000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 131923000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 131923000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 416812000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 416812000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 782771000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 782771000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1214433000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1214433000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1214433000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 105100000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 105100000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 462385000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 462385000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 771593000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 771593000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1213686000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1213686000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1213686000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 7283000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 7283000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 360764000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 360764000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 702356000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 702356000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1023885000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1023885000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -68052000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -68052000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 168572000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 168572000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 629705000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 629705000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1282880000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 202667000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3488854000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 3876578000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -3876578000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3850000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 404000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -102000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 325209000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -275000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -423000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -423000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -423000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 295000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -107000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 2616000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 2153000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 4648000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 4257000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5344000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5344000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5344000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5344000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -1060000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -1060000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -6284000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -6284000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -6215000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -6215000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -6057000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -6057000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -6057000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -6057000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2146000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2146000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 6190000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 6190000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 5606000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 5606000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7484000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7484000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1368000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1368000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1320000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 4987000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 9111000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1407000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PaymentsForProceedsFromMortgageServicingRights": {
        "label": "Payments for (Proceeds from) Mortgage Servicing Rights",
        "description": "The net cash outflow or inflow associated with acquisition or sale of mortgage servicing rights which is the net carrying value of capitalized servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. Rights may be obtained via (1) acquisition or assumption of a servicing obligation that does not relate to financial assets of the servicer or its consolidated affiliates; or (2) by originating mortgage loans and then (a) transferring the loans to a Variable Interest Entity (VIE) in a transaction that meets the necessary transfer and classification requirements, or (b) transferring the loans in a transaction that meets the requirements for sale accounting.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5931000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7178000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7178000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1200000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2630000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4026000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5258000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5258000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 698000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2283000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3770000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 5927000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "PaymentsForProceedsFromOtherInvestingActivities": {
        "label": "Payments for (Proceeds from) Other Investing Activities",
        "description": "Amount of cash (inflow) outflow from investing activities classified as other.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 100000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 8009000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 24000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 14053000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 30000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 18940000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 35000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 25323000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 42000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 42000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 42000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 14000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 13000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 71000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 70000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 67000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 87000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -49000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 108000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 108000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 108000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -353000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -115000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -1373000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -1135000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -1406000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -312000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -208000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -208000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -208000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -208000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 76000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 76000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 169000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 169000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 279000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 279000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 473000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 473000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 114000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 114000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 272000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 463000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 806000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 149000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PaymentsForRepurchaseOfCommonStock": {
        "label": "Payments for Repurchase of Common Stock",
        "description": "The cash outflow to reacquire common stock during the period.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 0,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 7575000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 7575000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 20665000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 20665000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 20665000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 24387000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 24387000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 24387000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1573000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1573000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2414000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2414000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 4949000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 4949000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 103624000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 103624000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 103624000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 321000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 321000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 321000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 321000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 321000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 321000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 321000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 321000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 321000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 58086000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 58086000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 163095000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 163095000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 163095000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 98077000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 98077000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 186995000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 186995000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 321263000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 321263000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 453123000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 453123000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 453123000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 156094000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 156094000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 282923000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 282923000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 333755000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 333755000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 333755000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 333755000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 334000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 792000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 792000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1240000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1240000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1240000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1240000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 700000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 700000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1648000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1648000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 618000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 618000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1231000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2127000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3027000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 899000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PaymentsOfDividends": {
        "label": "Payments of Dividends",
        "description": "Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 21830000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 30000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 23000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 32363000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 32000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 42000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 42000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 42000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 14000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 14000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 38000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 38000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 58000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 58000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 83000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 83000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 83000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 83000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 26000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 26000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 52000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 52000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 78000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 78000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 117000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 117000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 117000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 117000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 39000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 39000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 78000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 78000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 116000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 116000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 158000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 158000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 42000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 42000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 82000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 121000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 161000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 51000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PaymentsOfDividendsCommonStock": {
        "label": "Payments of Ordinary Dividends, Common Stock",
        "description": "Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 11477000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 6262000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 9392000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 12522000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 12522000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 3130000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 6260000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 6260000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 9390000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 9390000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 9390000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12521000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 12521000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 12521000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 3130000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 3130000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 6255000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 6255000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 9364000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 9364000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 9364000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 12499000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 12499000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 12499000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3085000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 3085000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 6169000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 6169000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 9245000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 9245000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 15398000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 15398000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 15398000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2891000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 2891000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 5777000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 2891000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 8663000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 5777000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 8663000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 8663000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 8663000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2885000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 2885000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5771000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 5771000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 8657000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 8657000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11543000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11543000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 11543000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3603000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 3603000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 7206000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 7206000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10809000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 10809000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18015000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18015000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 18015000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 7206000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 7206000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10809000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 10809000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14412000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14412000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 14412000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 7206000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 7206000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 7206000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 7206000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 10809000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14412000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 14412000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 4204000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 4204000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8408000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8407000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 12612000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 12612000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 16779000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 16779000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 16779000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 4668000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 4668000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 9243000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 9243000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13739000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13739000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 18137000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 18137000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 18137000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4256000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4256000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 13188000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 13188000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 21830000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 30393000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 30393000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9249000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 23112000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 41612000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "PaymentsOfStockIssuanceCosts": {
        "label": "Payments of Stock Issuance Costs",
        "description": "The cash outflow for cost incurred directly with the issuance of an equity security.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 619000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 619000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 619000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            }
          ]
        }
      },
      "PaymentsToAcquireAvailableForSaleSecurities": {
        "label": "Payments to Acquire Available-for-sale Securities",
        "description": "The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 1748963000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 1293856000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 1643560000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 1462593000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 1462593000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 672023000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 1603861000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 1603861000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2536499000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 2536499000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 2536499000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4192967000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 4192967000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 4192967000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 141592000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 141592000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 632041000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 632041000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2260736000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2260736000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2260736000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3480699000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3480699000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 3480699000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1681584000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1681584000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2914481000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2914481000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 4241879000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 4241879000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5169641000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5169641000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 5169641000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 736923000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 736923000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 1375766000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 1375766000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1940198000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1940198000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2671420000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2671420000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2671420000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 911409000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 911409000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1409878000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1409878000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1999666000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1999666000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2518680000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2518680000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2518680000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 626268000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 626268000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1435387000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 1435387000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1887604000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1887604000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2467993000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2467993000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2467993000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1139933000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1139933000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1966181000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1966181000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 2382141000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 2382141000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4086855000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4086855000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 871698000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 871698000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1186883000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1186883000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 1891967000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 1891967000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3648312000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3648312000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 374850000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 374850000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 920356000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 920357000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 979495000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 979495000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1451287000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1451287000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 593952000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 593952000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1553876000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1553876000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3706949000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3706949000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4705038000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4705038000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4305818000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4305818000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 5659704000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 5659704000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 7608380000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8678543000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1737890000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 2956016000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            }
          ]
        }
      },
      "PaymentsToAcquireAvailableForSaleSecuritiesDebt": {
        "label": "Payments to Acquire Debt Securities, Available-for-sale",
        "description": "Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 4086855000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3648312000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1451287000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 4705038000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 7608380000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8667406000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8667000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1738000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 2956000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 3620680000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 3621000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 6375349000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 6375000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 6375000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 6375000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 810000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 810000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1284000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1284000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1813000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1813000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1985000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1985000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1985000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1985000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 125000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 125000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 3095000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 3095000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 8415000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 8415000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12839000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12839000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12839000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12839000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 6296000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 6296000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 10757000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 10757000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 13339000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 13339000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 22490000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 22490000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1855000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1855000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2910000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 7476000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 13969000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2827000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PaymentsToAcquireBusinessesNetOfCashAcquired": {
        "label": "Payments to Acquire Businesses, Net of Cash Acquired",
        "description": "The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 0,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -18194000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -18194000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -18194000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -18194000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -18194000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -18194000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -182370000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -123137000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -123137000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -123137000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -123137000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -123137000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -123137000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -123137000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -123137000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -14745000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -14745000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -27943000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -27943000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 727000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 727000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 727000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 727000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 727000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -25646000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -25646000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -300703000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -300703000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -300703000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -300703000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -304820000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -304820000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -304820000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 106298000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 106298000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 106298000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 106298000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 155126000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 155126000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 155126000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 73792000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 73792000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 73792000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 73792000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 236728000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 236728000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 236728000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1235000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1235000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 59999000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 59999000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 59999000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 59999000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 59999000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 59999000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 60000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -134000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -134000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -134000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -134000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -134000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -1347000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            }
          ]
        }
      },
      "PaymentsToAcquireHeldToMaturitySecurities": {
        "label": "Payments to Acquire Held-to-maturity Securities",
        "description": "Amount of cash outflow through purchase of long-term held-to-maturity securities.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 0,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 73000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 73000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": -1000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 0,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 68699000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 68699000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 97827000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 97827000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 97827000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 116028000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 116028000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 183288000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 183288000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 223353000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 223353000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 223598000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 223598000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 223598000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 724412000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 724412000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 803307000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 803307000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 856047000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 856047000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1633165000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1633165000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1633000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 207313000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 207000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1012009000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1012000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1199419000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1199000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1401220000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1401000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1401000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1401000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 755000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 755000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 755000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 755000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 212000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 212000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 213000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 213000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 213000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 213000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 213000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 213000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 213000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 213000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 174000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 174000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 791000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 791000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 791000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 791000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 792000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 792000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 217000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 217000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 218000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 389000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 389000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 59000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PaymentsToAcquireInterestInSubsidiariesAndAffiliates": {
        "label": "Payments to Acquire Interest in Subsidiaries and Affiliates",
        "description": "The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 422500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 422500000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "PaymentsToAcquireMarketableSecurities": {
        "label": "Payments to Acquire Marketable Securities",
        "description": "Amount of cash outflow for purchase of marketable security.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2272000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2272000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2818000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2818000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 2818000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 2818000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2818000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2818000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2818000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 6076000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 6076000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 14108000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 14108000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 23238000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 23238000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 26166000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 26166000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 26166000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 287014000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 287014000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 331952000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 331952000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 333126000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 333126000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 333140000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 333140000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 333000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 306000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 306000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1563000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1563000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 6000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 6000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 5000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "PaymentsToAcquirePropertyPlantAndEquipment": {
        "label": "Payments to Acquire Property, Plant, and Equipment",
        "description": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 95160000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 50126000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 79980000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 95877000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 95877000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 18177000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 39916000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 39916000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -75738000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -75738000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 54961000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 70836000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 70836000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 70836000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 12832000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 12832000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 32574000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 32574000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 53510000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 53510000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 53510000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 76901000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 76901000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 76901000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 26610000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 26610000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 49253000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 49253000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 73616000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 73616000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 88883000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 88883000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 88883000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 8713000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 8713000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 26696000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 26696000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 38887000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 38887000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 66037000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 66037000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 66037000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 17326000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 17326000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 39550000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 39550000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 65763000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 65763000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 82708000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 82708000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 82708000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 13177000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 13177000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 31921000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 31921000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 55575000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 55575000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 89734000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 89734000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 89734000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 13595000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 13595000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 29617000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 29617000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 60982000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 60982000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 81841000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 81841000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 81841000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 15459000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 15459000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 35912000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 35912000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 60090000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 60090000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 84798000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 84798000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 84798000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 24081000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 24081000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 59603000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 60594000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 88270000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 91200000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 140444000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 140444000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 140444000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 23875000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 23875000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 54873000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 54873000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 89219000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 89219000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 121077000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 121077000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 121077000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 26930000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 26930000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 62721000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 62721000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 98490000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 98490000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 133384000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 133384000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 133000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 23544000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 25000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 51282000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 51000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 72463000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 72000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 107367000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 107000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 107000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 107000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 241000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 15000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 39000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 39000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 81000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 81000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 155000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 155000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 155000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 155000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 44000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 44000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 128000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 128000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 197000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 197000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 94000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 94000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 195000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 195000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 301000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 301000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 429000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 429000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 103000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 103000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 229000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 467000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 710000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 141000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent": {
        "label": "Liability, Defined Benefit Plan",
        "description": "Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 64144000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 64144000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 117933000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 117933000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 6661000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 54000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "PensionContributions": {
        "label": "Payment for Pension Benefits",
        "description": "Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 100000000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            }
          ]
        }
      },
      "PledgedAssetsSeparatelyReportedLoansPledgedForOtherDebtObligationsAtFairValue": {
        "label": "Pledged Assets Separately Reported, Loans Pledged for Other Debt Obligations, at Fair Value",
        "description": "The fair value, as of the date of each statement of financial position presented, of loans which are owned but transferred to serve as collateral for the payment of other debt obligations, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them.",
        "units": {
          "USD": [
            {
              "end": "2010-06-30",
              "val": 3442983000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 3697003000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 3697003000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 3744067000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 3744067000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 3744067000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 3744067000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 2376716000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 2346460000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 2346460000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 2346113000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 2346113000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 2346113000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 2492644000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 2492644000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 2492644000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 2492644000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 2492644000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 2398476000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 2398476000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 2451827000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 2451827000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 2493677000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 2570773000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 2570773000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 2570773000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 2570773000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 2570000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 2522055000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 2520435000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 2534250000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 2560000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 2560000000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 2560000000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 2560000000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 2560000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 2570000000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 2650000000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 2700000000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 3160000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 3160000000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 3160000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 3160000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 3160000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 3250000000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 3310000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 3690000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 8580000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 8580000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 8580000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 8580000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 8580000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 8510000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 8470000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 8370000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 8260000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 8260000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 8750000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 8750000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 9120000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged": {
        "label": "Pledged Financial Instruments, Not Separately Reported, Securities",
        "description": "Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.",
        "units": {
          "USD": [
            {
              "end": "2010-09-30",
              "val": 2015500000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 2015500000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 2096850000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 2096850000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 2096850000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 2604467000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 2684107000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 2563412000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 2563412000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 2563412000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 2588704000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 2588704000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 2588704000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 2588704000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 2588704000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 2540463000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 2540463000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 2432638000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 2432638000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 2475195000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 2351072000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 2351072000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 2351072000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 2351072000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 2350000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 2558079000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 2425876000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 2547581000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 2750000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 2750000000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 2750000000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 2750000000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 2750000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 2780000000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 2850000000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 2780000000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 4370000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 4370000000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 4370000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 4370000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 4370000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 4450000000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 4690000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 4750000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 4730000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 4730000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 4730000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 4730000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 4726446000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 4940000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 4770000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 4670000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 4548628000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 4550000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 4550000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 4550000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 4548628000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 5010000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 4710000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 4510000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 4593198000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 4590000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 4590000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 4590000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 4593198000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 3830000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 3670000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 3530000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 4030826000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 4030000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 4030000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 4030000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 4030000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 3680000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 3750000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 3400000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 3930000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 3930000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 3930000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 3930000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 3930000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 4020000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 4530000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 4480000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 4640000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 4600000000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 4600000000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 4600000000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 4640000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 4800000000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 5400000000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 5500000000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 5740000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 5700000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 5900000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            }
          ]
        }
      },
      "PreferredStockDividendsAndOtherAdjustments": {
        "label": "Preferred Stock Dividends and Other Adjustments",
        "description": "The aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 4790000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 4790000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4790000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 4790000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 9426000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 9426000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4636000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4636000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14062000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14062000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 4636000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 9272000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 4636000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 13908000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 4636000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18544000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "PreferredStockLiquidationPreference": {
        "label": "Preferred Stock, Liquidation Preference Per Share",
        "description": "The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.",
        "units": {
          "USD/shares": [
            {
              "end": "2020-12-31",
              "val": 1000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 1000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "PreferredStockParOrStatedValuePerShare": {
        "label": "Preferred Stock, Par or Stated Value Per Share",
        "description": "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.",
        "units": {
          "USD/shares": [
            {
              "end": "2015-12-31",
              "val": 0.01,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0.01,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 0.01,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 0.01,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 0.01,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 0.01,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 0.01,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 0.01,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 0.01,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0.01,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0.01,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 0.01,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 0.01,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 0.01,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 0.01,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 0.01,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 0.01,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 0.01,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 0.01,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 0.01,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 0.01,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 0.01,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 0.01,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 0.01,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 0.01,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 0.01,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 0.01,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 0.01,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 0.01,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 0.01,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 0.01,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 0.01,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 0.01,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 0.01,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 0.01,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 0.01,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 0.01,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 0.01,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0.01,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0.01,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0.01,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0.01,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.01,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.01,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.01,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.01,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0.01,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0.01,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0.01,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0.01,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0.01,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.01,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.01,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.01,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.01,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.01,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0.01,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0.01,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0.01,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0.01,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0.01,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0.01,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0.01,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0.01,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0.01,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0.01,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0.01,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0.01,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0.01,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0.01,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0.01,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0.01,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0.01,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0.01,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "PreferredStockSharesAuthorized": {
        "label": "Preferred Stock, Shares Authorized",
        "description": "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.",
        "units": {
          "shares": [
            {
              "end": "2015-12-31",
              "val": 10000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 10000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 10000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 10000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 10000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 10000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 10000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 10000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 10000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 10000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 10000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 10000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 10000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 10000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 10000000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 10000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 10000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 10000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 10000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 10000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 10000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 10000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 10000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 10000000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 10000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 10000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 10000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 10000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 10000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 10000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 10000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 10000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 10000000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 10000000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 10000000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 10000000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 10000000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 10000000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 10000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 10000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-04-24",
              "val": 10000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-04-24",
              "val": 10000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-04-24",
              "val": 10000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-04-24",
              "val": 10000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-04-25",
              "val": 20000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-04-25",
              "val": 20000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-04-25",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-04-25",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-06-30",
              "val": 20000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 20000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 20000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 20000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 20000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 20000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 20000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 20000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "PreferredStockSharesIssued": {
        "label": "Preferred Stock, Shares Issued",
        "description": "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.",
        "units": {
          "shares": [
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 345000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 345000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 345000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 345000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 345000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 345000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 345000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 345000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 345000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "PreferredStockSharesOutstanding": {
        "label": "Preferred Stock, Shares Outstanding",
        "description": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.",
        "units": {
          "shares": [
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 345000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 345000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 345000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 345000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 345000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 345000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 345000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 345000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 345000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "PreferredStockValue": {
        "label": "Preferred Stock, Value, Issued",
        "description": "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.",
        "units": {
          "USD": [
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 3000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 339937000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 339937000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 339937000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 339937000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 339937000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 339937000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 340000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 340000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 340000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 340000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 881000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 881000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 881000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 881000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 881000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 881000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 881000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 881000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 881000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 881000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 881000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 881000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 881000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 881000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 881000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 881000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 881000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 881000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 881000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 881000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 881000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 881000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 881000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 881000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 881000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 881000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 881000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 881000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 881000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1375000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 1375000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1765000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "PriorPeriodReclassificationAdjustment": {
        "label": "Prior Period Reclassification Adjustment",
        "description": "The amount of a reclassification adjustment made to prior period financial statement amounts.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 3300000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            }
          ]
        }
      },
      "ProceedsFromDebtNetOfIssuanceCosts": {
        "label": "Proceeds from Debt, Net of Issuance Costs",
        "description": "The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 345886000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 345850000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 345849000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 345849000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 345849000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "ProceedsFromIssuanceOfLongTermDebt": {
        "label": "Proceeds from Issuance of Long-term Debt",
        "description": "The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 330000000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 2997000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 91008000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 8616000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 8616000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 81482000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 68697000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 68697000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 68697000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -114425000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 310000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 310000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 310000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 70000000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 70000000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 70000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 70000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 70000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 120000000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 120000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 120000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 120000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 350000000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 350000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 350000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 350000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 350000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 75000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 75000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 150000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 150000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 150000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 150000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 150000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 150000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 150000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 175000000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 175000000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 175000000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 175000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 175000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 175000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 175000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 125000000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 125000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 125000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 125000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 125000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 100000000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 100000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 200000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 200000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 200000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 400000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 745886000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 400000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 745850000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 400000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 745849000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 400000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 400000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 746000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1652000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1652000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 3253000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 3253000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3854000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3854000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3854000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3854000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 6500000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 6500000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 9990000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 9990000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 9990000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 9990000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9991000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9991000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9991000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 9991000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1242000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1242000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1242000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1839000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1838000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 497000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromIssuanceOfPreferredStockAndPreferenceStock": {
        "label": "Proceeds from Issuance of Preferred Stock and Preference Stock",
        "description": "Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 345000000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 345000000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 345000000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 339937000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 340000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 494000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 390000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities": {
        "label": "Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale",
        "description": "Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 1714337000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 715300000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 1414910000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 1567326000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 1567326000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 261201000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 797949000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 797949000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1686400000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 1686400000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 1686400000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2592097000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 2592097000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 2592097000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 522893000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 522893000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 1214988000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1214988000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2848385000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2848385000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 2848385000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 4002724000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 4002724000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 4002724000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1275014000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1275014000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2328204000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2328204000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 3293188000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 3293188000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3986370000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3986370000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 3986370000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 674606000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 676188000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 1365287000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 1365287000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1951735000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 1951735000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2437851000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2437851000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2437851000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 866803000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 866803000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1529687000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 1529687000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1993051000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 1993051000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2482722000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2482722000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2482722000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 330500000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 330500000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 757780000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 757780000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1139053000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1139053000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1478608000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1478608000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1478608000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 396211000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 396211000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 627971000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 627971000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1213333000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1213333000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2149130000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2149130000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 2149130000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 787182000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 787182000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1140459000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 1140459000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 1436113000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 1436113000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1842563000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1842563000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1842563000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 503717000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 503717000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 797739000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 797739000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 946293000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1046293000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1564730000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1664730000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1664730000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 587023000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 587023000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1061895000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1061895000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1690277000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1690277000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2345512000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2345512000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2345512000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 572937000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 572937000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1139291000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 1139291000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1909462000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 1909462000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2791291000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2791291000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2791000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1079216000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1079000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1570492000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1570000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1968339000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1968000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2454722000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2455000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2455000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2455000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 330000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 330000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 665000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 676000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 927000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 952000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1237000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1237000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1237000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1237000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 227000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 227000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 486000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 486000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 774000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 774000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2084000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2084000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2084000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2084000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1221000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1221000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2729000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2729000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 5036000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 5036000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7445000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7445000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 894000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 894000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2972000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 5802000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 12989000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1159000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities": {
        "label": "Proceeds from Maturities, Prepayments and Calls of Held-to-maturity Securities",
        "description": "The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 1727000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 1808000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 2159000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 2343000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 2343000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 278000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 518000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 518000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 956000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 956000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 956000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1069000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1069000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1069000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 191000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 191000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 433000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 433000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 588000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 588000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 588000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 709000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 709000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 709000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 134000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 134000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 244000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 244000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 363000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 363000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 480000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 480000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 480000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 113000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 113000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 212000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 212000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 329000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 329000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 435000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 435000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 435000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 125000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 125000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 214000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 214000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 300000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 300000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 389000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 389000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 389000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 77000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 77000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 167000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 167000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 217000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 217000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 263000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 263000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 263000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 61000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 61000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 99000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 99000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 130000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 130000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 157000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 157000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 157000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 15000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 15000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 18000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 18000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 20000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 20000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 22000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 2000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 78384000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 78384000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 196146000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 196146000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 296632000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 296632000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 296632000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 88400000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 88400000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 190644000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 190644000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 305479000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 305479000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 341077000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 341077000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 341077000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 14166000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 14166000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 57057000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 57057000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 134736000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 134736000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 301347000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 301347000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 301000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 206282000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 206000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 413600000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 414000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 605664000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 606000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 809421000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 809000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 809000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 809000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 283000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 283000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 526000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 526000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 699000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 699000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 835000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 835000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 835000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 835000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 117000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 117000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 307000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 307000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 434000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 434000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 545000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 545000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 545000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 545000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 109000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 109000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 249000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 249000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 401000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 401000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 562000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 562000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 139000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 139000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 282000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 598000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1010000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 170000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromPaymentsForInInterestBearingDepositsInBanks": {
        "label": "Proceeds from (Payments for) in Interest-bearing Deposits in Banks",
        "description": "The net cash inflow or outflow in Interest-bearing Deposits by banks in other financial institutions for relatively short periods of time including, for example, certificates of deposits.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -1994972000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -3204000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -3241000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -3524000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -5527727000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -5528000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -4767000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -4767000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -4767000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2705000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2705000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 5514000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 5514000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 5817000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 5817000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6965000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6965000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6965000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 6965000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -88000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -88000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1110000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1110000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2322000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2322000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5416000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5416000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5416000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5416000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2817000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2817000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 8248000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 8248000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7969000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7969000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 12245000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 12245000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -3328000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -3328000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -4820000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -3434000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1563000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -3388000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromRepaymentsOfLongTermDebtAndCapitalSecurities": {
        "label": "Proceeds from (Repayments of) Long-term Debt and Capital Securities",
        "description": "Amount of cash inflow (outflow) from long-term debt, including capital lease obligations and mandatory redeemable capital securities.",
        "units": {
          "USD": [
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -114425000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -114425000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -216495000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -224915000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -273175000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -273175000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -273175000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -320730000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -320730000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -320730000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -37781000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -37781000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -45997000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -45997000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -223779000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -223779000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -196338000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -196338000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -196338000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -669000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -669000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -1608000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -1608000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -3958000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -3958000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -4152000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -4152000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -4152000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -469000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -469000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -1240000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -1240000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -2001000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -2001000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -54301000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -54301000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -54301000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -3140000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -3140000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -4483000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -4483000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -4633000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -4633000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -5896000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -5896000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -5896000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -68000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -68000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -3651000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -3651000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -3889000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -3889000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -11213000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -9279000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -442000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -442000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -7985000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -7985000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -6819000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -6819000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -6955000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -6955000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -651451000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -651451000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -653929000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -653929000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -717370000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -717370000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -752447000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -8688000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -33008000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -43545000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -73284000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019"
            }
          ]
        }
      },
      "ProceedsFromRepaymentsOfShortTermDebt": {
        "label": "Proceeds from (Repayments of) Short-term Debt",
        "description": "The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -83719000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -481098000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -481098000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -500217000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -500217000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -217033000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -227642000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -298278000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -298278000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -298278000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -283440000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -283440000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -283440000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 62771000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 62771000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 85077000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 85077000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 62551000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 62551000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -101717000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -101717000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -101717000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4597000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 4597000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 13432000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 13432000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 35930000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 35930000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -57087000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -57087000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -57087000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 35970000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 35970000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 81716000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 81716000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 91345000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 91345000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -25321000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -25321000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -25321000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -50835000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -50835000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -269460000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -269460000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -232928000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": -232928000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -397952000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -397952000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -397952000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 92841000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 92841000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 132167000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 132167000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 93655000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 93655000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -33072000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -33072000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 87100000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 87100000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 61030000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 61030000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -59207000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -59207000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -44680000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -44680000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -139049000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -139049000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -201303000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -201303000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -127547000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -127547000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -246517000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -246517000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -35428000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -35428000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -109109000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -109109000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -138741000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -138741000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -27703000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -27703000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -27703000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -92871000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": -92871000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 2043000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 2043000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -44344000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": -44344000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -96746000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -96746000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 39218000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 39000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 51117000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 51000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 22088000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -52386000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 27000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 57000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            }
          ]
        }
      },
      "ProceedsFromSaleAndMaturityOfMarketableSecurities": {
        "label": "Proceeds from Sale and Maturity of Marketable Securities",
        "description": "The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 664000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 664000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8493000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 8493000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 9503000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 9503000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9528000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9528000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9528000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 119000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 119000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 10694000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 10694000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 12739000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 12739000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 56749000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 56749000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 56749000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2438000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2438000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 313131000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 313131000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 332762000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 332762000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 352835000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 352835000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1111000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1111000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1111000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 29796000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "ProceedsFromSaleOfAvailableForSaleSecurities": {
        "label": "Proceeds from Sale of Available-for-sale Securities",
        "description": "The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 16456000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 0,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 151556000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 151559000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 151559000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 24137000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 24137000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 24137000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 38384000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 38384000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 38384000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 38496000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 38496000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 38496000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 191697000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 191697000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 191697000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 191697000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 242023000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 242023000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 242023000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 242023000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 242023000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 242023000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 0,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 56000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 56000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 56000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 56000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7900000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7900000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7900000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 1582000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 0,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 0,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 422652000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 422652000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 422652000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 481708000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 481708000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 522024000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 522024000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1036254000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1036254000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1286120000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1286120000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 1286120000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 987260000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 987260000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1370768000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 1370768000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1802155000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 1802155000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1829305000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1829305000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 14162000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 14162000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 517588000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 517588000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 538317000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 538317000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1345746000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1345746000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 119273000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 119273000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 119273000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 327737000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 360218000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 360218000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 610787000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 610787000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1746099000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1746099000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2308856000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2308856000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 3156988000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 3156988000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3122454000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3122454000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 3889386000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4585002000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 351984000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1078187000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            }
          ]
        }
      },
      "ProceedsFromSaleOfAvailableForSaleSecuritiesDebt": {
        "label": "Proceeds from Sale of Debt Securities, Available-for-sale",
        "description": "Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 1829305000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 1345746000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 151754000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2308856000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 3889386000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4585002000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4585000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 352000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1078000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1366909000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1367000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1366909000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1367000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1367000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1367000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 245000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 245000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 495000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 495000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 495000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 495000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 250000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 250000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 695000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 695000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 695000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 695000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1493000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1493000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1196000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1196000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1196000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1196000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3817000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromSaleOfLoansHeldForInvestment": {
        "label": "Proceeds from Sale of Loans Held-for-investment",
        "description": "The cash inflow from Sales of Loans Held For Investment.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 45862000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 45862000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 45862000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 45862000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 45862000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 13328000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 13328000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 77665000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 77665000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 77665000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 77665000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 77665000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 32294000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 32294000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 32294000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 32294000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 162486000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 162486000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 162649000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 162649000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 162649000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9591000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9591000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 9591000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 24247000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 24247000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 24247000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 24247000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 24247000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 24247000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 24247000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13368000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13368000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "ProceedsFromSaleOfLoansHeldForSale": {
        "label": "Proceeds from Sale of Loans Held-for-sale",
        "description": "The cash inflow resulting from the sale of loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 488158000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 442659000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 612916000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 761973000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 761973000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 124196000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 235171000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 235171000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 413958000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 413958000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 413958000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 592608000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 592608000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 592608000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 130641000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 130641000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 218533000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 218533000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 350855000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 350855000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 350855000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 518398000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 518398000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 518398000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 158391000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 158391000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 294163000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 294163000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 433489000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 433489000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 589376000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 589376000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 589376000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 121523000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 121523000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 254087000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 254087000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 376395000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 376395000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 443708000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 443708000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 443708000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 64009000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 64009000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 123967000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 123967000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 206310000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 206310000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 398719000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 398719000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 398719000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 127203000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 127203000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 338466000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 338466000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 540737000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 540737000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 701412000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 701412000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 701412000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 140160000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 140160000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 342505000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 342505000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 564026000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 564026000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 797123000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 797123000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 797123000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 162837000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 162837000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 309791000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 309791000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 487017000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 487017000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 660808000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 660808000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 660808000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 138538000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 138538000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 302766000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 302766000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 468705000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 468705000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 608549000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 608549000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 608549000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 123047000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 123047000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 326640000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 326640000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 490261000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 490261000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 731803000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 731803000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 731803000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 201886000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 201886000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 474153000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 474153000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 743508000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 743508000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1045937000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1045937000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1046000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 279180000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 562399000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 562000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 808172000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 808000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1035822000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1036000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1036000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1036000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 248000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 386000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 386000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 388000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 487000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 562000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 562000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 562000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 562000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 67000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 67000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 227000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 227000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 475000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 475000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 693000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 693000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 693000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 693000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 244000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 244000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 535000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 535000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 867000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 867000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1289000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1289000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 293000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 293000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 771000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1137000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1553000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 461000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromSaleOfLoansReceivable": {
        "label": "Proceeds from Sale of Loans Receivable",
        "description": "The cash inflow associated with the sale of loans receivables arising from the financing of goods and services.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 618100000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 756000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 756000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1050000000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1050000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1040000000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 260000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 53000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 116000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 116000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 173000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 182000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 245000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 245000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 245000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 245000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 113000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 113000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 263000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 263000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 290000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 290000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 317000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 317000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 317000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 317000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 74000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 74000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 218000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 218000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 244000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 244000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 354000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 354000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 41000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 41000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 146000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 220000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 399000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 128000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromSaleOfMachineryAndEquipment": {
        "label": "Proceeds from Sale of Machinery and Equipment",
        "description": "The cash inflow from sale of machinery and equipment.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 0,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 0,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1316000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1316000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1316000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "ProceedsFromSaleOfMortgageServicingRightsMSR": {
        "label": "Proceeds from Sale of Mortgage Servicing Rights (MSR)",
        "description": "The cash inflow from the sale of servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. Rights may be obtained via (1) acquisition or assumption of a servicing obligation that does not relate to financial assets of the servicer or its consolidated affiliates; or (2) by originating mortgage loans and then (a) transferring the loans to a Variable Interest Entity (VIE) in a transaction that meets the necessary transfer and classification requirements, or (b) transferring the loans in a transaction that meets the requirements for sale accounting.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1563000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            }
          ]
        }
      },
      "ProceedsFromSaleOfOtherRealEstate": {
        "label": "Proceeds from Sale of Other Real Estate",
        "description": "The cash inflow associated with the sale of other real estate not otherwise defined in the taxonomy.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 14836000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 40943000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            }
          ]
        }
      },
      "ProceedsFromSaleOfOtherRealEstateHeldforinvestment": {
        "label": "Proceeds from Sale of Other Real Estate Held-for-investment",
        "description": "The cash inflow associated with the sale of other real estate held for investment not otherwise defined in the taxonomy.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 15116000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 20112000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 10763000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 10763000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 33912000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 40943000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -54961000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -54961000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 75738000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 143740000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 143740000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 143740000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 18067000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 18067000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 24748000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 24748000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 57083000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 57083000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 57083000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 135803000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 135803000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 23853000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 23853000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 78820000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 78820000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 114357000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 114357000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 147858000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 36019000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 36019000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 80010000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 80010000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 120712000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 120712000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 10602000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 10602000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 38370000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 38370000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 55478000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 55478000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 22794000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 22794000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 47391000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 47391000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 63446000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 63446000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 8202000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 8202000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 16010000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 16010000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 24406000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 24406000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 8845000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 8845000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 20236000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 20236000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 31072000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 31072000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 40709000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 8380000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 8380000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 15769000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 15769000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 23488000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 23488000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28128000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28128000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 7430000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 7430000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 11884000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 11884000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 18892000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 18892000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 25918000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 25918000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 25918000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5265000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 5265000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 9263000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 9263000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 19683000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 19683000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 28280000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 28280000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 10011000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 20554000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 29666000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 40524000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "ProceedsFromSaleOfPropertyPlantAndEquipment": {
        "label": "Proceeds from Sale of Property, Plant, and Equipment",
        "description": "The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2205000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 2205000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2305000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2305000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 2920000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 2920000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3061000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3061000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 3061000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 13000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 13000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 198000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 198000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1648000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1648000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1721000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1721000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1721000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 54000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 54000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 75000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 75000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 128000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 128000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 132000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 132000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 132000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 37000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 37000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 46000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 46000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1369000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1369000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1143000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1176000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1194000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1194000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 19000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 12000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 12000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 13000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 13000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans": {
        "label": "Proceeds from Sale of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans",
        "description": "The cash inflow from proceeds From Sales of Wholly Owned Real Estate and Real Estate Acquired in Settlement of Loans.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 135803000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 147858000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 147858000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 147550000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 147550000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 147550000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 89485000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 89485000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 89485000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 80932000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 80932000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 80932000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 34944000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 34944000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 34944000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 40709000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 40709000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28128000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "PropertyPlantAndEquipmentGross": {
        "label": "Property, Plant and Equipment, Gross",
        "description": "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 1327819000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1350929000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1350929000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1432662000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1432662000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1474118000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 1474118000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 1785582000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1785582000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 1810954000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 1810954000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 1859822000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 1859822000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 1938756000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 1938756000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 2096239000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 2096239000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 2159367000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 2159367000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 2261459000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 2261459000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 2313049000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "PropertyPlantAndEquipmentNet": {
        "label": "Property, Plant and Equipment, Net",
        "description": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 821219000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 836456000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 837082000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 837082000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 837082000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 839960000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 846702000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 846702000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 845478000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 845478000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 845478000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 842745000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 842745000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 842745000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 842745000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 842745000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 842745000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 839463000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 839463000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 842911000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 842911000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 847372000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 847372000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 847372000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 854476000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 854476000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 854476000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 854476000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 854476000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 864466000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 864466000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 873483000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 873483000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 885757000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 882768000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 882768000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 882768000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 882768000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 882768000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 872045000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 872477000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 868001000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 876522000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 876522000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 876522000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 876522000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 876522000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 878850000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 883303000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 891722000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 1125081000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1125081000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 1125081000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 1125081000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 1125081000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 1116293000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 1121421000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 1123828000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 1135829000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 1135829000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 1135829000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 1135829000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 1135829000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 1127371000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 1120970000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 1134562000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 1133044000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 1133044000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 1133044000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 1133044000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 1133044000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 1123838000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 1129993000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 1131558000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 1138431000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 1138431000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 1138431000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 1138431000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 1138431000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 1140820000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 1167532000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 1167329000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 1204179000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 1204179000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 1204179000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 1204179000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 1204179000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 1203674000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 1213296000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 1222659000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 1244396000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 1244396000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 1244396000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 1244396000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 1244396000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 1251702000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 1255688000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 1255250000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 1251283000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 1251283000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 1251283000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 1251283000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 1251283000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 1238874000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 1237860000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 1230572000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 1233418000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "ProvisionForLoanAndLeaseLosses": {
        "label": "Provision for Loan and Lease Losses",
        "description": "Amount of expense related to estimated loss from loan and lease transactions.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 65926000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 39482000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 20759000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 57747000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 18265000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 79364000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 79364000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 16930000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 48756000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 48756000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 31826000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 31826000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 108629000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 108629000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 108629000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 59873000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 59873000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 59873000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 143519000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 143519000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 143519000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 44419000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 44419000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 98396000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 98396000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 53977000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 53977000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 143024000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 143024000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 143024000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 44628000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 44628000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 44628000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 232277000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 232277000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 232277000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 30715000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 30715000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 60382000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 60382000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 29667000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 29667000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 78005000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 78005000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 17623000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 17623000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 142885000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 142885000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 142885000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -18606000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -18606000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -31848000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -31848000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": -13242000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -13242000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -39531000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -39531000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -7683000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -7683000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -32255000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -32255000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -32255000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -1903000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -1903000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -9202000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -9202000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -7299000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -7299000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -7665000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -7665000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 1537000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 1537000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 640000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 640000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 640000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5792000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 5792000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 13511000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 13511000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 7719000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 7719000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 13618000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 13618000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 107000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 107000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 20664000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 20664000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 20664000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4843000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 4843000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 9405000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 9405000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4562000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 4562000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 16912000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 16912000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 7507000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 7507000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 32941000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 32941000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 32941000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 8231000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 8231000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 20555000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 20555000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 12324000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 12324000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 28501000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 28501000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 7946000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 7946000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25692000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25692000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25692000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 7605000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 7605000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 16043000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 16043000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 8438000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 8438000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 16883000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 16883000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 840000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 840000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28468000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28468000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28468000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11750000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11750000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 16948000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 16948000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5198000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5198000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 23714000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 23714000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 6766000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 6766000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 31441000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 31441000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 31441000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 28355000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 28355000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 48907000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 48907000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 20552000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 20552000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 52949000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 52949000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4042000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4042000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 58352000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 58352000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -10974000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -11000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -30577000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": -19603000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -31697000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -1120000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -36835000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 464000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            }
          ]
        }
      },
      "ProvisionForLoanLeaseAndOtherLosses": {
        "label": "Provision for Loan, Lease, and Other Losses",
        "description": "Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 142885000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -32255000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -32255000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 640000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 640000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 640000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 20664000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 20664000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 20664000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 32941000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 32941000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 25692000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 28467000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11750000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 16948000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 5198000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 23714000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 6766000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 31441000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 28355000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 28355000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 48907000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 48907000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 20552000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 20552000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 52949000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 52949000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4042000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 4042000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 58352000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 58352000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -10974000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -11000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -30577000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -31000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": -19603000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -31697000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -32000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -1120000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -36835000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -37000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -37000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -37000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 464000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 464000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 506000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 506000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 566000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 566000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 645000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 645000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 645000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 645000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 783000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 783000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 934000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 934000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1126000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1126000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1375000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1375000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1375000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1375000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 64000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 64000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 159000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 159000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 276000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 276000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 431000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 431000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 154000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 154000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 269000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 460000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 514000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 72000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "RealEstateAcquiredThroughForeclosure": {
        "label": "Real Estate Acquired Through Foreclosure",
        "description": "Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 50399000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 43513000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 36898000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            }
          ]
        }
      },
      "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax": {
        "label": "Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax",
        "description": "Amount after tax of reclassification adjustments of other comprehensive income (loss).",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -6458000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -2142000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -7304000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -2619000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": -5231000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": -2612000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -8887000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -7468000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -2668000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -2237000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -12424000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -10506000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -977000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": -977000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -1953000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": -1953000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -976000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": -976000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -2456000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": -2456000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -503000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -503000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -21146000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 14598000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1386000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 1386000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -305000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": -305000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -1691000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": -1691000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1327000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 1327000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1632000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1632000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 81000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 81000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1838000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 1838000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 8411000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 8411000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 6573000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 6573000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 7617000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 7617000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -965000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": -965000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 12351000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 12351000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -1574000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -1574000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -1026000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -1026000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 548000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 548000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -1650000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -1650000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": -624000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": -624000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -3419000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -3419000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -2569000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -2569000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -8828000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -8828000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -6259000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -6259000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -16526000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -16526000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -7698000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -7698000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -23667000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": -23667000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -6712000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": -6712000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -8993000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -8993000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": -2281000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": -2281000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -14926000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -14926000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -5933000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -5933000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -18292000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -18292000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 10419000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 10419000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 16082000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 16082000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 5663000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 5663000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 27704000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 27704000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 11622000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 11622000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 27276000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 27276000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2428000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 9817000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 7389000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 11157000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1340000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 5776000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "RepaymentsOfLongTermDebt": {
        "label": "Repayments of Long-term Debt",
        "description": "The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 0,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -81482000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 216495000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 224915000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 87000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 18000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 24000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 29000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 54000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 54000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 54000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3031000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3031000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 3542000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 3542000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 3740000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 3745000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5099000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5099000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5099000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5099000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1021000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1021000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10573000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10573000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 13016000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 13016000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 13120000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 13120000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 13120000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 13120000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 31000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 31000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 32000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 32000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 348000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 348000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 450000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 450000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 352000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 355000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2850000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2503000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "RepaymentsOfLongTermDebtAndCapitalSecurities": {
        "label": "Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security",
        "description": "Amount of cash outflow for debt, mandatory redeemable security, and principal payment for finance lease obligation.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 9279000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 6955000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 752447000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            }
          ]
        }
      },
      "RepaymentsOfOtherLongTermDebt": {
        "label": "Repayments of Other Long-term Debt",
        "description": "Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 752447000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 8688000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 33008000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 43545000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 73284000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 73284000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 38583000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 38583000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 75908000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 75908000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 82747000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 82747000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 86737000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 86737000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 17973000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 23947000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 29343000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 54332000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "RepaymentsOfShortTermDebt": {
        "label": "Repayments of Short-term Debt",
        "description": "The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 659519000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 47501000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 149515000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 83719000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 454861000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 505105000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 505105000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 481098000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 500217000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 217033000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 227642000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 33072000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 44680000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 246517000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 450000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 450000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1355000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1355000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1355000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1355000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1750000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1750000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 2250000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 2250000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2250000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2250000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2250000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2250000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2250000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2250000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "RetainedEarningsAccumulatedDeficit": {
        "label": "Retained Earnings (Accumulated Deficit)",
        "description": "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 1334655000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 1413993000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 1429863000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 1429863000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 1429863000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 1538248000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 1561665000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 1563720000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 1588336000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 1588336000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 1588336000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 1615290000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 1615290000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 1615290000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 1615290000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 1615290000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 1615290000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 1674839000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 1673920000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 1685477000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 1684558000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 1750382000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 1750382000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 1749868000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 1773652000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1773652000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 1773652000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 1773652000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1773652000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 1804498000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 1804498000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1838160000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 1838160000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 1872088000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 1792726000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1792726000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 1792726000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 1792726000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 1792726000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 1845101000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 1886121000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 1924217000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 1948558000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 1948558000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 1948558000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 1948558000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 1943345000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 1968039000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 1991703000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 2015180000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 2069647000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 2069647000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 2069647000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 2069647000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 2069647000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 2129860000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 2174121000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2226476000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 2265621000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 2265621000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 2265621000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 2265621000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 2265621000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 2314090000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 2379803000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 2427604000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 2476691000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 2476691000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 2476691000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 2476691000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 2476691000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 2540709000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 2671766000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 2735227000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 2785430000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 2785430000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 2785430000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 2785430000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 2785430000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 2931509000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 3020596000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 3133746000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 3218551000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 3218551000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 3218551000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 3218551000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 3218551000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 3325335000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 3440284000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 3560580000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 3658197000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 3658197000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 3658197000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 3658197000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 3658197000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 3632894000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 3651237000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 3738417000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 3867252000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 3867252000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 3867252000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 3867252000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 3867252000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 4005318000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 4148857000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 4263679000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 4377712000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 4378000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4378000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 4378000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 4378000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 4634000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 4865000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 5160000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 5392000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 5392000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 5392000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 5392000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 5392000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 5392000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 14885000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 15541000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 16267000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 16742000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 16742000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 16742000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 16742000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 16742000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 16742000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 17435000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 18102000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 18703000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 19361000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 19361000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 19361000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 19361000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 19361000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 19802000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 20337000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 20866000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 20768000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 20768000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 20343000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "RevenueFromContractWithCustomerIncludingAssessedTax": {
        "label": "Revenue from Contract with Customer, Including Assessed Tax",
        "description": "Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 166981000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 84770000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 254520000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 87538000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 179221000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 90486000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 266657000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 87436000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3"
            }
          ]
        }
      },
      "RevenueFromRelatedParties": {
        "label": "Revenue from Related Parties",
        "description": "Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 31242000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 33654000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 33654000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 34536000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 34536000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 34500000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 33653000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 33700000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 33700000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 21600000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 21600000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 21600000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17200000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17200000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 17200000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 100000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015"
            }
          ]
        }
      },
      "RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability": {
        "label": "Right-of-Use Asset Obtained in Exchange for Finance Lease Liability",
        "description": "Amount of increase in right-of-use asset obtained in exchange for finance lease liability.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1886000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1886000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1886000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1191000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1191000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 4000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 8000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 8000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 22000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 22000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 48000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 55000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 64000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 3000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": {
        "label": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability",
        "description": "Amount of increase in right-of-use asset obtained in exchange for operating lease liability.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 3591000000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 15162000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 17762000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 17837000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 17837000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4595000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4595000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 6535000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 8000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 8000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 17000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 17000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 4000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 4000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 10000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 69000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 69000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 69000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 69000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 69000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 69000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 17000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 17000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 22000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 22000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 26000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 26000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 28000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 28000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 3000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 3000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 41000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 44000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 48000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 6000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "SalariesAndWages": {
        "label": "Salary and Wage, NonOfficer, Excluding Cost of Good and Service Sold",
        "description": "Amount of expense for salary and wage arising from service rendered by nonofficer employee. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 259250000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 129297000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 63751000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 195428000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 66131000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 264342000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 264342000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 72160000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 146635000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 146635000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 74475000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 74475000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 221362000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 221362000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 221362000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 74727000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 74727000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 74727000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 297897000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 297897000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 297897000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 75804000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 75804000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 151928000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 151928000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 76124000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 76124000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 229805000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 229805000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 229805000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 77877000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 77877000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 77877000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 308088000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 308088000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 75684000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 75684000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 152470000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 76786000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 229145000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 76675000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 307331000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 76119000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            }
          ]
        }
      },
      "SalariesWagesAndOfficersCompensation": {
        "label": "Salary and Wage, Excluding Cost of Good and Service Sold",
        "description": "Amount of expense for salary and wage arising from service rendered by nonofficer and officer employees. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 308088000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 152470000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 76786000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 229145000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 76675000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 307331000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 307036000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 76119000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 151921000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 151921000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 75802000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 75802000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 228384000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 228384000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 76463000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 76463000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 308941000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 308936000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 308936000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 79874000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 79353000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 162557000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 161192000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 82683000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 81839000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 243017000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 243017000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 81825000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 81825000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 349279000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 349279000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 349279000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 106543000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 105471000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 217228000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 215366000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 110685000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 109895000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 324358000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 324358000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 108992000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 108992000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 429742000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 429742000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 429742000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 103899000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 103899000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 207958000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 207958000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 104059000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 104059000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 315720000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 315720000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 107762000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 107762000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 428351000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 428351000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 443746000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 112263000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 116362000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 230432000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 238188000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 118169000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 121826000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 351518000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 363076000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 121086000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 124888000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 475214000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 490610000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 490610000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 129203000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 129203000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 259044000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 259044000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 129841000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 129841000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 392911000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 392911000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 133867000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 133867000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 527691000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 527691000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 527691000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 132421000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 132421000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 268947000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 268947000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 136526000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 136526000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 406788000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 406788000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 137841000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 137841000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 551112000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 551112000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 551112000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 145255000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 145255000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 291888000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 291888000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 146633000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 146633000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 439185000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 439185000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 147297000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 147297000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 590020000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 590020000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 147830000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 301473000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 153643000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 462420000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 160947000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 623194000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "SecuritiesOwnedNotReadilyMarketable": {
        "label": "Securities Owned Not Readily Marketable (Deprecated 2019-01-31)",
        "description": "Aggregate carrying value of owned private equity or other securities for which a quoted market price is not readily determinable, the value of which has been determined by management based upon fair value methods, including pricing of similar securities and valuation techniques and is included in the schedule of financial condition or the balance sheet.",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 2500000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 12500000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "SecuritiesSoldUnderAgreementsToRepurchase": {
        "label": "Securities Sold under Agreements to Repurchase",
        "description": "Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 172275000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 111907000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 111900000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 97000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 97000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 294400000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 324425000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 324425000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 324425000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 324426000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 365283000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 740674000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 777206000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 716685000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 756011000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 747429000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 707603000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 681688000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 571559000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 543936000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 543936000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 543936000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 543936000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 508508000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 544527000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 522195000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 442956000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 442956000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 442956000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 442956000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 442956000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 540362000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 740276000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 693889000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 641487000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 641487000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 641487000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 641487000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 641487000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 680705000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 692604000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 663575000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 589101000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 589000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 589000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 589000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 589000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 616000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 646000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 578000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 436000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 436000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 436000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 436000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 436000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 436000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 509000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 454000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 453000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 395000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 386000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 391000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 450000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 471000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 423000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 224000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 224000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 170000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral": {
        "label": "Securities Sold under Agreements to Repurchase, Fair Value of Collateral",
        "description": "Fair value of securities pledged as collateral against securities sold under agreement to repurchase.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 418300000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 418300000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 418300000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 418300000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 386800000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 869000000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 825600000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 722000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 722000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 722000000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 722000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 722000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 787000000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 846900000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 826000000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 690800000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 690800000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 690800000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 690800000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 690800000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 769800000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 808700000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 659600000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 684200000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 684200000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 684200000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 684200000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 684181000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 535600000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 511800000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 597400000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 598561000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 598600000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 598600000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 571600000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 612500000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 541600000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 477600000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 558500000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 766800000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 748100000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 689300000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 685600000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 778400000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 685900000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 619100000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "SecuritiesSoldUnderAgreementsToRepurchaseGross": {
        "label": "Securities Sold under Agreements to Repurchase, Gross",
        "description": "Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.",
        "units": {
          "USD": [
            {
              "end": "2014-12-31",
              "val": 324425000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 324425000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 324425000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 324426000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 365283000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 740674000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 777206000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 622182000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 716685000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 756011000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 747429000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 620772000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 707603000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 681688000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 571559000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 586171000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 586171000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 522207000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            }
          ]
        }
      },
      "SecurityOwnedNotReadilyMarketableFairValue": {
        "label": "Security Owned Not Readily Marketable, Fair Value",
        "description": "Value of the not readily marketable security or category which has been determined by management based upon fair value methods, including pricing of similar securities and valuation techniques and is included in the schedule of financial condition or the balance sheet.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 12500000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 11600000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 11600000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 9600000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "ServicingAsset": {
        "label": "Servicing Asset",
        "description": "Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 1784000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 16000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 16000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 16000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 16000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 16436000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 16436000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-03-31",
              "val": 16436000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-03-31",
              "val": 16436000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 18162000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 18162000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-06-30",
              "val": 18162000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-06-30",
              "val": 18162000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 19327000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 19327000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 17186000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 17186000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-03-31",
              "val": 17186000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-03-31",
              "val": 17186000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 16824000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 16824000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-06-30",
              "val": 16824000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-06-30",
              "val": 16824000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 17730000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 17730000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 20771000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 20771000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-03-31",
              "val": 20771000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-03-31",
              "val": 20771000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 20524000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 20524000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-06-30",
              "val": 20524000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-06-30",
              "val": 20524000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 22003000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-09-30",
              "val": 22003000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 21659000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2018-03-31",
              "val": 21659000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-03-31",
              "val": 21659000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 21657000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-06-30",
              "val": 21657000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-06-30",
              "val": 21657000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 21633000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-09-30",
              "val": 21633000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 20647000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 20647000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 20665000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2019-06-30",
              "val": 20665000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 20571000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            }
          ]
        }
      },
      "ServicingAssetAtAmortizedValue": {
        "label": "Servicing Asset at Amortized Cost",
        "description": "Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.",
        "units": {
          "USD": [
            {
              "end": "2008-12-31",
              "val": 417000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 4552000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2009-12-31",
              "val": 4552000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 2894000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2010-12-31",
              "val": 2894000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 4346000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 4346000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1784000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1784000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 16000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 16000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2013-12-31",
              "val": 16000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2014-12-31",
              "val": 16688000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2015-12-31",
              "val": 19351000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2016-12-31",
              "val": 20415000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2017-12-31",
              "val": 21945000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2018-12-31",
              "val": 21396000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 20647000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-03-31",
              "val": 20647000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 20665000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-06-30",
              "val": 20665000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 20571000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2019-12-31",
              "val": 22963000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2019-12-31",
              "val": 23000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 19756000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2020-03-31",
              "val": 19756000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-03-31",
              "val": 19756000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-03-31",
              "val": 19756000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 18664000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-06-30",
              "val": 18664000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-06-30",
              "val": 18664000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-06-30",
              "val": 18664000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 18145000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-09-30",
              "val": 18145000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 18426000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 18426000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 18426000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 18426000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 18426000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2020-12-31",
              "val": 18000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2020-12-31",
              "val": 18000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2020-12-31",
              "val": 18000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2020-12-31",
              "val": 18000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2020-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 22745000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2021-03-31",
              "val": 22745000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-03-31",
              "val": 23000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-03-31",
              "val": 23000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 21985000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-06-30",
              "val": 21985000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2021-06-30",
              "val": 22000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-06-30",
              "val": 22000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 21696000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2021-09-30",
              "val": 22000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 23357000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 23000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 23000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 23000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 23000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 23000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 23000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 28000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 28000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 28000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-06-30",
              "val": 28000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 26000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 25000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 25000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 25000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 25000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 25000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 25000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 25000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 25000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 26000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 27000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 27000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "ServicingAssetAtAmortizedValueAdditions": {
        "label": "Servicing Asset at Amortized Cost, Additions",
        "description": "Amount of additions from purchases, assumption or transfer to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 5783000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3436000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3436000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 727000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 727000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 662000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 662000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2589000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 2589000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1927000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 1927000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4446000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 4446000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1857000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 1857000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5910000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5910000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 5910000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 977000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 977000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 2328000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 2328000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1351000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 1351000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 4251000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 4251000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1923000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 1923000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5931000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5931000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 5931000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1702000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 1702000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2825000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 2825000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1123000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 1123000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 5721000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 5721000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 2896000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 2896000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7174000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7174000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 7174000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1200000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 1200000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2630000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 1430000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4026000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 4026000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1396000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 1396000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5258000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5258000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 5258000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 859000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 859000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1552000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2411000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 1552000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3943000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 3943000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1532000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1532000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6149000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6149000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6149000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1583000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 1583000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3679000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 3679000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2096000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 2096000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 5673000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 5673000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 1994000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 1994000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8006000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8006000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 8000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 3444000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 6545000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 3101000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 8436000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 9000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1891000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 10556000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 11000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 11000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 11000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "ServicingAssetAtAmortizedValueAmortization": {
        "label": "Servicing Asset at Amortized Value, Amortization (Deprecated 2012-01-31)",
        "description": "Decreases in the value of servicing assets due to the periodic amortization in proportion to and over the period of estimated net servicing income.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -1648000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -1354000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -1984000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011"
            }
          ]
        }
      },
      "ServicingAssetAtAmortizedValueAmortization1": {
        "label": "Servicing Asset at Amortized Cost, Amortization",
        "description": "Amount of amortization of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 1354000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 1984000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2260000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "ServicingAssetAtAmortizedValueOtherChangesThatAffectBalanceAmount": {
        "label": "Servicing Asset at Amortized Cost, Other Changes that Affect Balance, Amount",
        "description": "Amount of other increase (decrease) to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-03-31",
              "val": -304000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010Q1"
            },
            {
              "start": "2009-12-30",
              "end": "2010-03-31",
              "val": 304000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -304000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -304000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "ServicingAssetAtAmortizedValueOtherThanTemporaryImpairments": {
        "label": "Servicing Asset at Amortized Value, Other than Temporary Impairments (Deprecated 2013-01-31)",
        "description": "Adjustment made to the carrying value of servicing assets measured using the amortization method related to an other-than-temporary impairment, for example, due to a decrease in future servicing income or an increase in servicing costs.",
        "units": {
          "USD": [
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 302000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012"
            }
          ]
        }
      },
      "ServicingAssetAtAmortizedValueValuationAllowance": {
        "label": "Servicing Asset at Amortized Cost, Increase (Decrease) for Valuation Allowance Adjustment",
        "description": "Amount of increase (decrease) in the amortized amount from a decrease (increase) in the valuation allowance applied to the servicing asset for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 302000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "ServicingAssetAtFairValueAdditions": {
        "label": "Servicing Asset at Fair Value, Additions",
        "description": "The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.",
        "units": {
          "USD": [
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 727000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            }
          ]
        }
      },
      "ServicingAssetAtFairValueAmount": {
        "label": "Servicing Asset at Fair Value, Amount",
        "description": "Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 16000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            }
          ]
        }
      },
      "ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed": {
        "label": "Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed",
        "description": "Estimated rate of prepayments of principal on servicing assets and servicing liabilities.",
        "units": {
          "Rate": [
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0.1425,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0.1425,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0.1425,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0.1425,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0.1425,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 0.1607,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 0.1324,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 0.1041,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0.1101,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0.1101,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0.1101,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0.1101,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0.1101,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0.1332,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 0.1042,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0.1479,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0.1042,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0.1483,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0.1042,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0.1042,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0.1042,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0.0982,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0.1093,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0.1041,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0.1093,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0.1139,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.1093,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.1093,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0.1093,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0.0915,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0.0843,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0.0838,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.0926,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.0926,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.0926,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0.0926,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0.1128,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 0.1372,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0.1339,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0.1372,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 0.1415,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 0.1372,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.0926,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.1372,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0.1372,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0.1938,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 0.2062,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 0.2019,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 0.2062,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 0.208,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 0.2062,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.2062,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.2062,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0.1654,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0.1657,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0.1732,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.1569,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ],
          "pure": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.1569,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.1569,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.1569,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0.0956,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0.1569,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0.084,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0.067,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.0676,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.0676,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.0676,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0766,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0766,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "ShortTermBorrowings": {
        "label": "Short-term Debt",
        "description": "Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "end": "2009-06-30",
              "val": 599853000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 576609000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 642405000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 642405000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 642405000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 594121000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 541709000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 541709000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 652716000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 652716000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 652716000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 546597000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 546597000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 546597000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 546597000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 546597000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 546597000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 666417000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 666417000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 655808000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 655808000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 600384000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 600384000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 600384000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 615222000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 615222000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 615222000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 615222000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 615222000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 677993000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 677993000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 700299000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 677773000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 568505000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 568505000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 568505000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 573102000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-12-31",
              "val": 511418000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 511418000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 987184000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 987184000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 594733000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 594733000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 603487000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 603487000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 693807000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 693807000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 572287000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 572287000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 738233000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 738233000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 641487000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 589000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 589000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 589000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 616000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-09-30",
              "val": 3128000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2186000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 2186000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 2186000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 2186000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 2186000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 2186000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1009000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 454000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 453000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 485000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 395000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 386000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 391000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 367000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 450000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 471000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 423000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 224000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 224000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 170000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval": {
        "label": "Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval",
        "description": "Amount of dividends that can be declared or paid without approval of regulatory agency.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 1410000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 1480000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            }
          ]
        }
      },
      "StockholdersEquity": {
        "label": "Stockholders' Equity Attributable to Parent",
        "description": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.",
        "units": {
          "USD": [
            {
              "end": "2007-12-31",
              "val": 1441208000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2007Q4I"
            },
            {
              "end": "2008-12-31",
              "val": 1443375000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2008-12-31",
              "val": 1443375000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2008-12-31",
              "val": 1443375000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2008-12-31",
              "val": 1443375000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-06-30",
              "val": 1434213000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 1514684000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2009-12-31",
              "val": 1559115000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 1667590000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 1693309000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "end": "2010-06-30",
              "val": 1695364000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 1718204000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "end": "2010-09-30",
              "val": 1718204000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-09-30",
              "val": 1718204000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2010-12-31",
              "val": 1732962000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 1789133000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "end": "2011-03-31",
              "val": 1788214000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 1810189000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "end": "2011-06-30",
              "val": 1809270000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 1871930000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "end": "2011-09-30",
              "val": 1871930000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "end": "2011-09-30",
              "val": 1871416000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2011-12-31",
              "val": 1861128000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 1892123000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "end": "2012-03-31",
              "val": 1892123000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 1929790000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "end": "2012-06-30",
              "val": 1929790000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 1974124000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "end": "2012-09-30",
              "val": 1974124000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 1864007000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 1864007000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2012-12-31",
              "val": 1864007000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2012-12-31",
              "val": 1864007000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2012-12-31",
              "val": 1864007000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2012-12-31",
              "val": 1864007000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2012-12-31",
              "val": 1864007000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2012-12-31",
              "val": 1864007000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2012-12-31",
              "val": 1859624000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2012-12-31",
              "val": 1859624000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 1918581000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "end": "2013-03-31",
              "val": 1918581000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 1939330000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "end": "2013-06-30",
              "val": 1939330000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 1982057000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "end": "2013-09-30",
              "val": 1982057000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 2076675000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 2076675000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 2076675000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2013-12-31",
              "val": 2076675000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2013-12-31",
              "val": 2071462000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2013-12-31",
              "val": 2071462000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 2071462000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 2071462000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 2071462000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2013-12-31",
              "val": 2071462000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 2104830000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "end": "2014-03-31",
              "val": 2099730000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 2149145000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "end": "2014-06-30",
              "val": 2144181000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 2166707000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "end": "2014-09-30",
              "val": 2161881000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2014-12-31",
              "val": 2687594000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 2765377000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 2768719000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 2793890000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 2793890000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 2862528000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 2862528000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2015-12-31",
              "val": 2872109000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 2961194000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 2961194000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 3035704000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 3035704000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 3083748000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 3083748000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2016-12-31",
              "val": 3012427000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 3100696000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 3100696000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 3239851000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 3239851000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 3313831000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2017-09-30",
              "val": 3313831000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2017-12-31",
              "val": 3334064000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 3372114000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2018-03-31",
              "val": 3372114000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-03-31",
              "val": 3372114000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 3446886000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2018-06-30",
              "val": 3446886000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-06-30",
              "val": 3446886000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 3499013000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2018-09-30",
              "val": 3499013000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2018-12-31",
              "val": 3488954000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 3523309000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2019-03-31",
              "val": 3523309000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2019-03-31",
              "val": 3523309000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-03-31",
              "val": 3523309000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 3574613000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2019-06-30",
              "val": 3574613000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2019-06-30",
              "val": 3574613000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-06-30",
              "val": 3574613000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 3568482000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2019-09-30",
              "val": 3568482000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2019-12-31",
              "val": 3586184000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2019-12-31",
              "val": 3586000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 3957520000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2020-03-31",
              "val": 3957520000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-03-31",
              "val": 3957520000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-03-31",
              "val": 3957520000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 3991444000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-06-30",
              "val": 3991444000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-06-30",
              "val": 3991444000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-06-30",
              "val": 3991444000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 4074414000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-09-30",
              "val": 4074414000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 4229268000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 4229268000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 4229268000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 4229268000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 4229268000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2020-12-31",
              "val": 4229000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2020-12-31",
              "val": 4229000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2020-12-31",
              "val": 4229000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2020-12-31",
              "val": 4229000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 4229000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2020-12-31",
              "val": 4229000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 4321400000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2021-03-31",
              "val": 4321400000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-03-31",
              "val": 4321000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-03-31",
              "val": 4321000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 4476490000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-06-30",
              "val": 4476490000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2021-06-30",
              "val": 4477000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-06-30",
              "val": 4477000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 4581295000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2021-09-30",
              "val": 4582000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 4737241000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2021-12-31",
              "val": 4738000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 10570000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 10570000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-03-31",
              "val": 10570000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 10570000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 10642000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-06-30",
              "val": 10642000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2022-06-30",
              "val": 10642000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-06-30",
              "val": 10642000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 9833000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2022-09-30",
              "val": 9833000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2022-12-31",
              "val": 9662000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 19216000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2023-03-31",
              "val": 19216000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-03-31",
              "val": 19216000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-03-31",
              "val": 19216000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 19771000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-06-30",
              "val": 19771000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-06-30",
              "val": 19771000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-06-30",
              "val": 19771000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 20389000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-09-30",
              "val": 20389000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 21255000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 21848000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2024-03-31",
              "val": 21848000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2024-03-31",
              "val": 21848000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-03-31",
              "val": 21848000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 22487000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2024-06-30",
              "val": 22487000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2024-06-30",
              "val": 22487000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-06-30",
              "val": 22487000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 22828000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2024-09-30",
              "val": 22828000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 22228000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 22228000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 22228000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 22228000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 22228000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2024-12-31",
              "val": 22228000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 22295000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2025-03-31",
              "val": 22295000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2025-03-31",
              "val": 22295000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 22296000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2025-06-30",
              "val": 22296000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 21986000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 22238000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 22238000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 22048000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "StockIssuedDuringPeriodSharesNewIssues": {
        "label": "Stock Issued During Period, Shares, New Issues",
        "description": "Number of new stock issued during the period.",
        "units": {
          "shares": [
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 339958000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 339958000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 339937000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": -21000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 339937000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            }
          ]
        }
      },
      "StockIssuedDuringPeriodValueNewIssues": {
        "label": "Stock Issued During Period, Value, New Issues",
        "description": "Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 563628000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 563628000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 563628000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 339937000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": -21000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 339937000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 339937000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 494000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "StockRepurchasedAndRetiredDuringPeriodValue": {
        "label": "Stock Repurchased and Retired During Period, Value",
        "description": "Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 46085000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 46085000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 46085000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016"
            }
          ]
        }
      },
      "StockRepurchasedDuringPeriodShares": {
        "label": "Stock Repurchased During Period, Shares",
        "description": "Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.",
        "units": {
          "shares": [
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 0,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 37688,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 125000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 125000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 243000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 243000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 448500,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 448500,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 205500,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 205500,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 744400,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 744400,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 295900,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 295900,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 349390,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 349390,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 695390,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 346000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 813090,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 117700,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1027414,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1027414,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            }
          ]
        }
      },
      "StockRepurchasedDuringPeriodValue": {
        "label": "Stock Repurchased During Period, Value",
        "description": "Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.",
        "units": {
          "USD": [
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 7575000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": -7575000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 1573000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2414000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 2414000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 321000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 321000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 321000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 321000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 58086000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 58086000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 165300000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 100700000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 100700000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 190500000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 190500000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 89800000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 89800000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 325900000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 325900000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 135400000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 135400000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 450800000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 450800000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 159704000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 159700000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 286695000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 126991000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 333755000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 47060000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 333800000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 334000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 842000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 842000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1240000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022"
            }
          ]
        }
      },
      "StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased": {
        "label": "Stock Repurchase Program, Number of Shares Authorized to be Repurchased",
        "description": "The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.",
        "units": {
          "shares": [
            {
              "end": "2018-10-31",
              "val": 800000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-10-31",
              "val": 800000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2019-04-30",
              "val": 800000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q1I"
            }
          ]
        }
      },
      "SubleaseIncome": {
        "label": "Sublease Income",
        "description": "Amount of sublease income excluding finance and operating lease expense.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 130000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 216000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 86000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 303000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 86000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 390000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 390000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 350000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 350000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 355000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 2000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 6000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "SubordinatedDebt": {
        "label": "Subordinated Debt",
        "description": "Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.",
        "units": {
          "USD": [
            {
              "end": "2018-12-31",
              "val": 140741000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 140741000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 140741000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 140741000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 136544000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 154277000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 149051000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 163412000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 163412000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 163412000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 163412000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 163412000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 504145000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 504246000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 504381000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 504518000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 504518000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 504518000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 504518000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 504518000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 497153000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 497290000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 497427000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 477564000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 478000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 478000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1058000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1055000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "TaxCreditCarryforwardValuationAllowance": {
        "label": "Tax Credit Carryforward, Valuation Allowance",
        "description": "Amount of valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from tax credit carryforwards for which it is more likely than not that a tax benefit will not be realized.",
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets": {
        "label": "Banking Regulation, Tier One Leverage Capital Ratio, Capital Adequacy, Minimum",
        "description": "Ratio of minimum Tier 1 leverage capital to average assets required for capital adequacy as defined by regulatory framework.",
        "units": {
          "pure": [
            {
              "end": "2015-12-31",
              "val": 0.04,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0.04,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 0.04,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0.04,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0.04,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0.04,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0.04,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.04,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.04,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.04,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.04,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.04,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.04,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.04,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.04,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.04,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.04,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.04,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets": {
        "label": "Banking Regulation, Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum",
        "description": "Ratio of minimum Tier 1 risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.",
        "units": {
          "pure": [
            {
              "end": "2011-12-31",
              "val": 0.04,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0.04,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 0.04,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 0.04,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 0.06,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 0.06,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 0.06,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0.06,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 0.06,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 0.06,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0.06,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.06,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.06,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.06,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.06,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.06,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.06,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.06,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.06,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.06,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.06,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.06,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TierOneRiskBasedCapitalToRiskWeightedAssets": {
        "label": "Banking Regulation, Tier One Risk-Based Capital Ratio, Actual",
        "description": "Ratio of Tier 1 risk-based capital to risk-weighted assets as defined by regulatory framework.",
        "units": {
          "pure": [
            {
              "end": "2013-12-31",
              "val": 0.1426,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 0.1247,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0.1247,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0.1247,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0.1247,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.1239,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.1237,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.1136,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.1106,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0.1106,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0.1106,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0.1106,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0.1106,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0.1106,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.1313,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.14,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.1383,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.1394,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.1394,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0.1394,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.1353,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0.1353,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.1191,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TierTwoRiskBasedCapital": {
        "label": "Banking Regulation, Tier Two Risk-Based Capital, Actual",
        "description": "Amount of Tier 2 risk-based capital as defined by regulatory framework.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 75000000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 50000000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 50000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 25000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 25000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 9000000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 9000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 6000000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 6000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 3000000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 3000000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 20000000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 20000000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 32500000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            }
          ]
        }
      },
      "TimeDepositMaturitiesAfterYearFive": {
        "label": "Time Deposit Maturities, after Year Five",
        "description": "Amount of time deposit maturing after fifth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 1650000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 16000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 3000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 3000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 17380000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 141497000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 179853000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 123000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 122000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 122000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 126000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 125000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 125000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TimeDepositMaturitiesYearFive": {
        "label": "Time Deposit Maturities, Year Five",
        "description": "Amount of time deposit maturing in fifth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 198117000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 80903000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 38277000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 43930000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 56631000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 68046000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 39553000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 32838000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 49453000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 42960000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 67000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 59000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 41000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 34000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 31000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 23000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 18000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 18000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 21000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 22000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 25000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TimeDepositMaturitiesYearFour": {
        "label": "Time Deposit Maturities, Year Four",
        "description": "Amount of time deposit maturing in fourth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 220495000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 191530000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 87179000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 96949000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 111857000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 154294000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 95179000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 194413000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 106782000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 67908000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 56970000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 369000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 201000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 95000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 73000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 55000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 50000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 65000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 34000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 34000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 28000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 24000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 20000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 23000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 19000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TimeDepositMaturitiesYearOne": {
        "label": "Time Deposit Maturities, Year One",
        "description": "Amount of time deposit maturing in next fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 3098124000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 2557814000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1920998000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 2423786000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 2359710000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 1984571000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 1684017000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 1895313000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 2971410000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1844860000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1937216000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 6765000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 5963000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 6178000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 6896000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 9199000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 13744000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 15251000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 15175000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 15175000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 15831000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 14331000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 13400000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 12724000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 11002000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TimeDepositMaturitiesYearThree": {
        "label": "Time Deposit Maturities, Year Three",
        "description": "Amount of time deposit maturing in third fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 251267000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 270099000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 296073000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 241437000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 114448000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 175359000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 202134000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 115643000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 386094000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 143272000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 81558000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 695000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 737000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 685000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 546000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 437000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 286000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 395000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 74000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 74000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 66000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 58000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 47000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 39000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 31000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TimeDepositMaturitiesYearTwo": {
        "label": "Time Deposit Maturities, Year Two",
        "description": "Amount of time deposit maturing in second fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 854351000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 473881000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 532711000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 701043000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 453560000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 435823000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 378234000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 518504000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 306490000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 648516000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 225370000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1223000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1299000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1187000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2935000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 3281000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 2042000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1307000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 1126000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1126000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 1065000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 726000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 641000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 445000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 159000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TimeDeposits": {
        "label": "Time Deposits",
        "description": "Amount of time deposit liabilities, including certificates of deposit.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 5952771000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 4624004000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2011-12-31",
              "val": 4624004000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 3574243000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2012-12-31",
              "val": 3574243000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 2875238000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 2875238000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 3507145000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 3507145000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 3096206000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 3096206000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 2818096000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 2818096000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 2399120000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 2399120000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 2756711000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 2756711000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 3837609000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 3837609000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 2889013000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 2889013000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 2480967000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 2481000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 2481000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 2481000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 2481000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9242000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 8381000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 8308000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 10610000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 10610000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 10610000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 10610000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 10410000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 10410000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 13128000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 16270000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 17036000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 16427000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 16432000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 16432000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 16427000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 16432000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 16432000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 17008000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 15159000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 14129000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 13253000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 13253000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 11236000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TimeDeposits100000OrMore": {
        "label": "Time Deposits, $100,000 or More",
        "description": "Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 3073219000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 2332368000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 2332368000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "end": "2012-12-31",
              "val": 1610000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1610782000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "end": "2013-12-31",
              "val": 1270000000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            }
          ]
        }
      },
      "TransferOfInvestments": {
        "label": "Transfer from Investments",
        "description": "Value of investments transferred from the entity's investments in noncash transactions.",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 0,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 236617000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 236617000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 361225000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 361225000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 309623000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 150122000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2080617000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2080617000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2080617000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            }
          ]
        }
      },
      "TransferOfLoansHeldForSaleToPortfolioLoans1": {
        "label": "Transfer of Loans Held-for-sale to Portfolio Loans",
        "description": "Value of loans held-for-sale transferred to loans held in the entity's portfolio in noncash transactions.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 2016000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 605000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            }
          ]
        }
      },
      "TransferOfOtherRealEstate": {
        "label": "Real Estate Owned, Transfer from Real Estate Owned",
        "description": "Value transferred out of real estate owned (REO) in noncash transactions.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 67380000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 55559000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 55559000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 156918000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 156918000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 46929000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 77780000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 122471000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 122471000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 122471000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 213195000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 213195000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 213195000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 26840000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 26840000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 80413000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 80413000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 117363000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 117363000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 140645000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 140645000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 140645000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 38008000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 38008000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 57175000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 57175000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 78303000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 78303000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 92125000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 92125000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 92125000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4832000,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 4832000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 25080000,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 25080000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 42136000,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 42136000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 65956000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 65956000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 65956000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 21300000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 21300000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 30350000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 30350000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 44065000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 44065000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 55032000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 55032000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 55032000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 9980000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 9980000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 21280000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 21280000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 31517000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 31517000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 35272000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 35272000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 35272000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5822000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 5822000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 21891000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 21891000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 26926000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 26926000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 34980000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 34980000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 6582000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 6582000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11868000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 11868000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 17013000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 17013000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23375000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2613000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5710000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13242000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            }
          ]
        }
      },
      "TransferOfPortfolioLoansAndLeasesToHeldForSale1": {
        "label": "Transfer of Portfolio Loans and Leases to Held-for-sale",
        "description": "Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.",
        "units": {
          "USD": [
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 73907000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 32130000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 84509000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 84509000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 161719000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 161719000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 161719000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            }
          ]
        }
      },
      "TransferOtherRealEstate": {
        "label": "Transfer Other Real Estate (Deprecated 2011-01-31)",
        "description": "Value of real estate transferred in noncash transactions during the reporting period.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 44714000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 20307000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 67380000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 23770000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 55559000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 55559000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 156918000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 46929000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 77780000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            }
          ]
        }
      },
      "TransferToInvestments": {
        "label": "Transfer to Investments",
        "description": "Value of investments transferred to the entity's investments in noncash transactions.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 2486761000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 2485761000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 2485761000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2485761000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2485761000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 2485761000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1460745000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1460745000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 451684000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "TransferToOtherRealEstate": {
        "label": "Real Estate Owned, Transfer to Real Estate Owned",
        "description": "Value transferred from mortgage loans to real estate owned (REO) in noncash transactions.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 34980000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1622000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23375000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 23375000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 520000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 2613000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 2184000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 5710000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 2184000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 13242000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14639000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14639000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 14639000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4560000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 4560000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7138000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 7138000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10295000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10295000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 11635000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 11635000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 12000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2374000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4791000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 7861000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 13979000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 2000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 20000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 20000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 20000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 52000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 52000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 54000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 55000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 86000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums": {
        "label": "Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums",
        "description": "Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 22900000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 20800000,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 20800000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 16600000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 16600000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 16600000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 16600000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 16600000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 13200000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 10800000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 8800000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 6700000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 6700000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 6700000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 6700000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 6700000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 5000000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 3800000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 1900000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 1700000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 1700000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "end": "2017-12-31",
              "val": 1700000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "end": "2017-12-31",
              "val": 1700000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "end": "2017-12-31",
              "val": 1700000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 1500000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-06-30",
              "val": 1200000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-09-30",
              "val": 200000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-12-31",
              "val": 100000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 100000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "end": "2018-12-31",
              "val": 100000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "end": "2018-12-31",
              "val": 100000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "end": "2018-12-31",
              "val": 79000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 100000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 500000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 200000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 927000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 900000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 927000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 927000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 900000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 1400000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 100700000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 83500000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 50200000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "UnrealizedGainLossOnCashFlowHedgingInstruments": {
        "label": "Unrealized Gain (Loss) on Cash Flow Hedging Instruments",
        "description": "Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective.",
        "units": {
          "USD": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 5301000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -8896000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": -8896000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -4125000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -4125000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 1717000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": -308000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": -4039000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 4039000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 4039000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -1222000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": -1222000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -1222000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 389000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 389000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -306000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": -306000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": -456000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -456000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 316000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 316000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 815000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 2202000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 2489000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 3178000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "UnrealizedGainLossOnInvestments": {
        "label": "Unrealized Gain (Loss) on Investments",
        "description": "Amount of unrealized gain (loss) on investment.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 19935000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -33430000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": -29994000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": -38913000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -39326000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 1692000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 8226000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 8226000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 5529000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 5529000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 5259000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -12574000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": -12574000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -12574000,
              "accn": "0001193125-11-051609",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-03-01"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -9339000,
              "accn": "0001193125-11-134144",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-05-10"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": -9339000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 8642000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 8642000,
              "accn": "0001193125-11-215686",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-08-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 5635000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 5635000,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 5635000,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3370000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 3370000,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 3370000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -2898000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -2898000,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1590000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 1590000,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 16342000,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 16342000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7244000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 7244000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": -1476000,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": -40468000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": -36998000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -50441000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            }
          ]
        }
      },
      "UnrealizedGainLossOnSecurities": {
        "label": "Unrealized Gain (Loss) on Securities",
        "description": "Amount of unrealized gain (loss) recognized in the income statement on unsold other securities.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 3897000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 5178000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 6844000,
              "accn": "0001193125-10-181343",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-08-06"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 8631000,
              "accn": "0001193125-10-251740",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-11-08"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefits": {
        "label": "Unrecognized Tax Benefits",
        "description": "Amount of unrecognized tax benefits.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 2823000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 3865000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2014-12-31",
              "val": 3865000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 5975000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 5975000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2015-12-31",
              "val": 5975000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 28879000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 28879000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2016-12-31",
              "val": 28879000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2016-12-31",
              "val": 28879000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 29004000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 29004000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2017-12-31",
              "val": 29004000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2017-12-31",
              "val": 29004000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 28255000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "end": "2018-12-31",
              "val": 28255000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 28255000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2018-12-31",
              "val": 28255000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 32226000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "end": "2019-12-31",
              "val": 32226000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 32226000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 31375000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 31375000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2020-12-31",
              "val": 31000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 30432000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 31000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 31000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2021-12-31",
              "val": 31000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 30000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 30000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 30000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2022-12-31",
              "val": 30000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2022-12-31",
              "val": 30000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 31000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 31000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 31000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2023-12-31",
              "val": 31000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 86000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 86000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 89000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions": {
        "label": "Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions",
        "description": "Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
        "units": {
          "USD": [
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 6449000,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 6449000,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 6449000,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 6449000,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 79000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 79000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 327000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 327000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 327000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 44000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 44000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1054000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1054000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1054000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 683000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 683000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 683000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 321000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 17000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities": {
        "label": "Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities",
        "description": "Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1128000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1128000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1900000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1516000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1516000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1601000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense": {
        "label": "Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense",
        "description": "Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1127000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 298000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 298000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 357000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 357000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 357000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 450000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 450000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 450000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 564000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 564000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 429000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 429000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 896000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 896000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 515000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions": {
        "label": "Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions",
        "description": "Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 1042000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2189000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 2189000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23231000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23231000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 23231000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 125000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 169000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 169000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1433000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1433000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1433000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6554000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6554000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 6554000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1295000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1295000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1373000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 8000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 8000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 4000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions": {
        "label": "Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions",
        "description": "Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 153000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 153000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 48000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 48000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations": {
        "label": "Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations",
        "description": "Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 1128000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1900000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 1900000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 783000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 783000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 394000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance": {
        "label": "Valuation Allowance for Impairment of Recognized Servicing Assets, Balance",
        "description": "Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2014-12-31",
              "val": 850000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 912000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "end": "2015-03-31",
              "val": 912000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-03-31",
              "val": 912000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-03-31",
              "val": 912000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 3000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "end": "2015-06-30",
              "val": 3000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-06-30",
              "val": 3000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-06-30",
              "val": 3000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "end": "2015-09-30",
              "val": 0,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2015-12-31",
              "val": 95000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-03-31",
              "val": 1969000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "end": "2016-03-31",
              "val": 1969000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-03-31",
              "val": 1969000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-03-31",
              "val": 1969000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-06-30",
              "val": 2349000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "end": "2016-06-30",
              "val": 2349000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-06-30",
              "val": 2349000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-06-30",
              "val": 2349000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-09-30",
              "val": 1989000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "end": "2016-09-30",
              "val": 1989000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3I"
            },
            {
              "end": "2016-12-31",
              "val": 4000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "end": "2016-12-31",
              "val": 4000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2016-12-31",
              "val": 4000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2016-12-31",
              "val": 4000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "end": "2016-12-31",
              "val": 4000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 161000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-03-31",
              "val": 161000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 128000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-06-30",
              "val": 128000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 173000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2019-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 3189000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "end": "2020-03-31",
              "val": 3189000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-03-31",
              "val": 3189000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-03-31",
              "val": 3189000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 4258000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "end": "2020-06-30",
              "val": 4258000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-06-30",
              "val": 4258000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-06-30",
              "val": 4258000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 4563000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "end": "2020-09-30",
              "val": 4563000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 4365000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 4365000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2020-12-31",
              "val": 4365000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2020-12-31",
              "val": 4365000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2020-12-31",
              "val": 4365000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2020-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2020-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2020-12-31",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2020-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2020-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 1242000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "end": "2021-03-31",
              "val": 1242000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 3026000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "end": "2021-06-30",
              "val": 3026000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2021-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 3026000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 1263000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            }
          ]
        }
      },
      "ValuationAllowanceForImpairmentOfRecognizedServicingAssetsPeriodIncreaseDecrease": {
        "label": "Valuation Allowance for Impairment of Recognized Servicing Assets, Period Increase (Decrease)",
        "description": "The net increase (decrease) in the valuation allowance for servicing assets subsequently measured using the amortization method.",
        "units": {
          "USD": [
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 222000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4143000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4143000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -3102000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries": {
        "label": "Valuation Allowance for Impairment of Recognized Servicing Assets, Additions (Deductions) for Expenses (Recoveries)",
        "description": "Amount of increase (decrease) in the valuation allowance for impairment of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer from expenses (recoveries) recognized.",
        "units": {
          "USD": [
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 0,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 0,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 0,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -850000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -850000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -62000,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": -62000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 847000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 847000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 909000,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 909000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 850000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 850000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 3000,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 3000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 755000,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 755000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 755000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -1874000,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -1874000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -2254000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -2254000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": -380000,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": -380000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -1894000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -1894000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 360000,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 360000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 91000,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 91000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 91000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 4000,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 4000,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 4000,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 4000,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4000,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 4000,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4000,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4000,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 4000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 0,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 0,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 0,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 161000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 161000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": -128000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 128000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 33000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": -33000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": -173000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 173000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": -45000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 45000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -222000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -222000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": -222000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2967000,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 2967000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 4036000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 4036000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 1069000,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 1069000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 4341000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 4341000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 305000,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 305000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -4143000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -4143000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -3123000,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -1339000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 1784000,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -1339000,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3102000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "VariableLeaseCost": {
        "label": "Variable Lease, Cost",
        "description": "Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.",
        "units": {
          "USD": [
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 528000,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 1252000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 724000,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 1779000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 527000,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2394000,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 2394000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3231000,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3231000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3110000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 9000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 9000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 3000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 12000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 12000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 12000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 12000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 4000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 4000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 7000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 7000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 4000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 16000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 16000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 8000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 8000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 25000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 9000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 9000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 15000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 15000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 6000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 6000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 22000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 22000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 7000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 7000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 28000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 28000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 7000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 7000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 12000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 5000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 16000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 22000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 5000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "WeightedAverageNumberOfDilutedSharesOutstanding": {
        "label": "Weighted Average Number of Shares Outstanding, Diluted",
        "description": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.",
        "units": {
          "shares": [
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10137321,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 9836629,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 10056654,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9816405,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 9816405,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 9816405,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 9816405,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 9816405,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 9816405,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 9816405,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9816405,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9816405,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9816405,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 15779153,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 15779153,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 15937826,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 15937826,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 16035090,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 16035090,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 15867314,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 15867314,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 15727993,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 15727993,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15549944,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15549944,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15549944,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15549944,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 14539709,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 14539709,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 14539176,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 14539176,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 14537938,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 14537938,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 14539383,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 14539383,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 14539133,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 14539133,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 14539613,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 14539613,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 14539613,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 14539613,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 14536442,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 14536442,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 14535472,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 14535472,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 14534499,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 14534499,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 14481919,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 14481919,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 14375974,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 14375974,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 14342655,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 14342655,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 13575231,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 13575231,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 13405295,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 13237226,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 13217940,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 12849339,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 13002455,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 11924899,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "WeightedAverageNumberOfSharesOutstandingBasic": {
        "label": "Weighted Average Number of Shares Outstanding, Basic",
        "description": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.",
        "units": {
          "shares": [
            {
              "start": "2008-12-31",
              "end": "2009-12-31",
              "val": 10434453,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07",
              "frame": "CY2009"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 10434453,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2009-12-30",
              "end": "2010-09-30",
              "val": 10434453,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 10434453,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 10434453,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18",
              "frame": "CY2010Q3"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 10434453,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2009-12-31",
              "end": "2010-12-31",
              "val": 10434453,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 10434453,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10",
              "frame": "CY2011Q1"
            },
            {
              "start": "2010-12-29",
              "end": "2011-06-30",
              "val": 10428623,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-03-31",
              "end": "2011-06-30",
              "val": 10422857,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09",
              "frame": "CY2011Q2"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 10406833,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 10406833,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2010-12-30",
              "end": "2011-09-30",
              "val": 10406833,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 10363964,
              "accn": "0000798941-11-000009",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-11-09"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 10363964,
              "accn": "0000798941-11-000011",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q/A",
              "filed": "2011-11-18"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 10363964,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09",
              "frame": "CY2011Q3"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 10376445,
              "accn": "0000798941-12-000008",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-03-07"
            },
            {
              "start": "2010-12-31",
              "end": "2011-12-31",
              "val": 10376445,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 10376445,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 10283842,
              "accn": "0000798941-12-000015",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-05-10"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 10283842,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09",
              "frame": "CY2012Q1"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 10277593,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2011-12-30",
              "end": "2012-06-30",
              "val": 10277593,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 10271343,
              "accn": "0000798941-12-000030",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-08-09"
            },
            {
              "start": "2012-03-31",
              "end": "2012-06-30",
              "val": 10271343,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2012Q2"
            },
            {
              "start": "2011-12-31",
              "end": "2012-09-30",
              "val": 10273082,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 10273082,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 10264159,
              "accn": "0000798941-12-000038",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-11-09"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": 10264159,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07",
              "frame": "CY2012Q3"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 10244472,
              "accn": "0000798941-13-000007",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-03-01"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 10244472,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 10244472,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 9618985,
              "accn": "0000798941-13-000020",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-05-09"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 9618985,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07",
              "frame": "CY2013Q1"
            },
            {
              "start": "2012-12-29",
              "end": "2013-06-30",
              "val": 9618963,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 9618963,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-03-31",
              "end": "2013-06-30",
              "val": 9618941,
              "accn": "0000798941-13-000028",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-08-07",
              "frame": "CY2013Q2"
            },
            {
              "start": "2013-04-01",
              "end": "2013-06-30",
              "val": 9618941,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 9618955,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-01-01",
              "end": "2013-09-30",
              "val": 9618955,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 9618941,
              "accn": "0000798941-13-000038",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-11-07"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": 9618941,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 9618952,
              "accn": "0000798941-14-000011",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 9618952,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 9618952,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 9618941,
              "accn": "0000798941-14-000021",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-05-07"
            },
            {
              "start": "2014-01-01",
              "end": "2014-03-31",
              "val": 9618941,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07",
              "frame": "CY2014Q1"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 9618941,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-01-01",
              "end": "2014-06-30",
              "val": 9618941,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 9618941,
              "accn": "0000798941-14-000030",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-08-08"
            },
            {
              "start": "2014-04-01",
              "end": "2014-06-30",
              "val": 9618941,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05",
              "frame": "CY2014Q2"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 9618941,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-01-01",
              "end": "2014-09-30",
              "val": 9618941,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 9618941,
              "accn": "0000798941-14-000038",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-11-05"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": 9618941,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 10221721,
              "accn": "0000798941-15-000009",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 10221721,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 10221721,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22",
              "frame": "CY2014"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 12010405,
              "accn": "0000798941-15-000018",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-05-07"
            },
            {
              "start": "2015-01-01",
              "end": "2015-03-31",
              "val": 12010405,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05",
              "frame": "CY2015Q1"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 12010405,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-01-01",
              "end": "2015-06-30",
              "val": 12010405,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 12010405,
              "accn": "0000798941-15-000025",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-08-05"
            },
            {
              "start": "2015-04-01",
              "end": "2015-06-30",
              "val": 12010405,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04",
              "frame": "CY2015Q2"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 12010405,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-01-01",
              "end": "2015-09-30",
              "val": 12010405,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 12010405,
              "accn": "0000798941-15-000029",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-11-04"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 12010405,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12010405,
              "accn": "0000798941-16-000034",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-24"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12010405,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 12010405,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 12010405,
              "accn": "0000798941-16-000044",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-05-05"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": 12010405,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 12010405,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 12010405,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12010405,
              "accn": "0000798941-16-000054",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-08-04"
            },
            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 12010405,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 12010405,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 12010405,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 12010405,
              "accn": "0000798941-16-000064",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-10-31"
            },
            {
              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 12010405,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02",
              "frame": "CY2016Q3"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 12010405,
              "accn": "0000798941-17-000007",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-22"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 12010405,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 12010405,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 12010405,
              "accn": "0000798941-17-000018",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-04"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 12010405,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 12010405,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 12010405,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 12010405,
              "accn": "0000798941-17-000030",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-08-03"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 12010405,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 12010405,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 12010405,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 12010405,
              "accn": "0000798941-17-000036",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-11-02"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 12010405,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12010405,
              "accn": "0000798941-18-000006",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-21"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12010405,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 12010405,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26",
              "frame": "CY2017"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 12010405,
              "accn": "0000798941-18-000016",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-05-03"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 12010405,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 12010405,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 12010405,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 12010405,
              "accn": "0000798941-18-000024",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-08-02"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 12010405,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 11997281,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 11997281,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 11971460,
              "accn": "0000798941-18-000040",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-11-01"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 11971460,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 11938439,
              "accn": "0000798941-19-000009",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-20"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 11938439,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-12-31",
              "val": 11938439,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24",
              "frame": "CY2018"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11519008,
              "accn": "0000798941-19-000027",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-05-08"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 11519008,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05",
              "frame": "CY2019Q1"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 11402122,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-01-01",
              "end": "2019-06-30",
              "val": 11402112,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 11286520,
              "accn": "0000798941-19-000035",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-08-06"
            },
            {
              "start": "2019-04-01",
              "end": "2019-06-30",
              "val": 11286520,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05",
              "frame": "CY2019Q2"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 11286984,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-01-01",
              "end": "2019-09-30",
              "val": 11286984,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 11060462,
              "accn": "0000798941-19-000047",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-11-05"
            },
            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 11060462,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03",
              "frame": "CY2019Q3"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11141069,
              "accn": "0000798941-20-000014",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-26"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11141069,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2019-01-01",
              "end": "2019-12-31",
              "val": 11141069,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2019"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 10473119,
              "accn": "0000798941-20-000029",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-05-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-03-31",
              "val": 10473119,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04",
              "frame": "CY2020Q1"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 10289320,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-01-01",
              "end": "2020-06-30",
              "val": 10289320,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 10105520,
              "accn": "0000798941-20-000037",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-08-05"
            },
            {
              "start": "2020-04-01",
              "end": "2020-06-30",
              "val": 10105520,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03",
              "frame": "CY2020Q2"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10137321,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-01-01",
              "end": "2020-09-30",
              "val": 10137321,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 9836629,
              "accn": "0000798941-20-000039",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-11-03"
            },
            {
              "start": "2020-07-01",
              "end": "2020-09-30",
              "val": 9836629,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02",
              "frame": "CY2020Q3"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 10056654,
              "accn": "0000798941-21-000014",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-24"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 10056654,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 10056654,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9816405,
              "accn": "0000798941-21-000029",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-05-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 9816405,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 9816405,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 9816405,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 9816405,
              "accn": "0000798941-21-000036",
              "fy": 2021,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-08-03"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 9816405,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 9816405,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 9816405,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 9816405,
              "accn": "0000798941-21-000046",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-11-02"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 9816405,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9816405,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9816405,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9816405,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 9816405,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 15779153,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 15779153,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 15918978,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 15918978,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 16023613,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 16023613,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 15849219,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 15849219,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 15711976,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 15711976,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15531924,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15531924,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15531924,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15531924,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 14526693,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 14526693,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 14527417,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 14527417,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 14528134,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 14528134,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 14527718,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 14527718,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 14528310,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 14528310,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 14527902,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 14527902,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 14527902,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 14527902,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 14533302,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 14533302,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 14533900,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 14533900,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 14534499,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 14534499,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 14480874,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 14480874,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 14375974,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 14375974,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 14341872,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 14341872,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 13575231,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 13575231,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 13405295,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 13237226,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 13217940,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 12849339,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 13002455,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 11924899,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum": {
        "label": "Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum",
        "description": "Ratio of minimum Common Equity Tier 1 risk-based capital to risk-weighted assets required for capital adequacy as defined by regulatory framework.",
        "units": {
          "pure": [
            {
              "end": "2021-12-31",
              "val": 0.045,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.045,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.045,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.045,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.045,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.045,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.045,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.045,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.045,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.045,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.045,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.045,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "CashSurrenderValueOfLifeInsurance": {
        "label": "Cash Surrender Value of Life Insurance",
        "description": "Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 111671000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 113391000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent": {
        "label": "Assets for Plan Benefits, Defined Benefit Plan",
        "description": "Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 157902000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 289030000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 289000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 289000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 289000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 289000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 297000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 303000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 378000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 343000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 343000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 343000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 343000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 343000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 343000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 359000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 359000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 364000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 474000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 474000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 474000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 474000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 474000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 568000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 480000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 476000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 482000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 658000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "EquitySecuritiesFvNiCurrentAndNoncurrent": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 91680000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 97528000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 98000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 98000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 98000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 98000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 100000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 94000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 92000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 95000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 85000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 76000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 75000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 84000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 79000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 78000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 82000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 95000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 97000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 110000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 127000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 127000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 130000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "IncomeTaxReceivable": {
        "label": "Income Taxes Receivable",
        "description": "Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 66465000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 798640000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 799000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 799000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 799000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 799000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 834000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 843000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 816000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 284000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 208000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 518000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 209000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 209000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 209000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 209000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 209000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 209000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 103000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 402000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 342000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 505000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures": {
        "label": "Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures",
        "description": "Amount of investment in equity method investee and investment in and advance to affiliate.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 45392000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 40450000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "OtherAssetsMiscellaneous": {
        "label": "Other Assets, Miscellaneous",
        "description": "Amount of other miscellaneous assets.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 130119000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 158390000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 194000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 114000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 177000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 177000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 540000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 370000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 467000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1145000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1145000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1145000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1145000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1145000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1145000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 2055000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 861000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 840000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 871000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 871000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 871000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 871000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 871000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 777000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 828000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 982000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 796000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 778000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "PrepaidExpenseCurrentAndNoncurrent": {
        "label": "Prepaid Expense",
        "description": "Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 40489000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 37660000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivable": {
        "label": "Sales-type and Direct Financing Leases, Lease Receivable",
        "description": "Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term guaranteed by lessee or other third party unrelated to lessor, from sales-type and direct financing leases.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 354813000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 285941000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1882000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1839000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1803000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1786000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1780000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1780000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1764000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1827000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived": {
        "label": "Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received",
        "description": "Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 335385000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 261469000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 2099000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 2031000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1993000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1989000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 2035000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2035000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1989000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 2064000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears": {
        "label": "Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Five",
        "description": "Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 13630000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 75000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 36000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 56000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 83000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 79000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 79000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 94000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 84000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears": {
        "label": "Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Four",
        "description": "Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 28065000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 179000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 116000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 144000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 179000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 198000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 198000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 205000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 234000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths": {
        "label": "Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year One",
        "description": "Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 96974000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 899000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 706000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 757000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 811000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 793000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 793000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 741000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 739000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter": {
        "label": "Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, after Year Five",
        "description": "Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 5758000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 12000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 13000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 14000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 24000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 48000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 45000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears": {
        "label": "Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Three",
        "description": "Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 46407000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 346000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 249000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 285000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 342000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 360000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 360000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 360000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 394000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears": {
        "label": "Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Two",
        "description": "Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 70635000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 588000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 441000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 492000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 550000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 579000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 579000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 541000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 568000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivableUndiscountedExcessAmount": {
        "label": "Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount",
        "description": "Amount of undiscounted lease receivable in excess of discounted receivable for sales-type and direct financing leases.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 19428000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 24472000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 217000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 192000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 190000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 203000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 255000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 255000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 225000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 237000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TaxAdjustmentsSettlementsAndUnusualProvisions": {
        "label": "Tax Adjustments, Settlements, and Unusual Provisions",
        "description": "Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 13900000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2300000,
              "accn": "0000798941-22-000014",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2021"
            }
          ]
        }
      },
      "AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent": {
        "label": "Accounts Payable and Accrued Liabilities",
        "description": "Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 534000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 484000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 295000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 313000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 275000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 476000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 391000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 462000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 397000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 351000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 351000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 397000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 351000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 549000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 360000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 265000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            }
          ]
        }
      },
      "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": {
        "label": "APIC, Share-based Payment Arrangement, Increase for Cost Recognition",
        "description": "Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 71000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 71000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 72000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 72000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 74000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 74000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 75000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -5000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -5000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 2000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 2000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -3000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -3000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -9000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -9000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -9000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -9000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -13000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -13000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -12000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            }
          ]
        }
      },
      "AmortizationOfBelowMarketLease": {
        "label": "Amortization of Below Market Lease",
        "description": "Amount of amortization of acquired leases acquired as part of a real property acquisition at below market lease rate with a finite life.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 12000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "AociBeforeTaxAttributableToParent": {
        "label": "AOCI before Tax, Attributable to Parent",
        "description": "Amount before tax of increase (decrease) in accumulated equity from transactions and other events and circumstances from non-owner sources, attributable to parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners (distributions to owners).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 13000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 13000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 13000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": -402000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": -614000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": -960000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": -967000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": -967000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": -967000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": -967000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": -967000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": -967000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": -879000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": -1018000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": -1164000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": -637000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": -637000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": -637000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": -637000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": -637000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": -637000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": -761000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": -798000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": -187000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": -575000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": -575000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": -575000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": -575000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": -575000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": -244000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": -130000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": -35000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 134000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 134000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": -74000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "AociTaxAttributableToParent": {
        "label": "AOCI Tax, Attributable to Parent",
        "description": "Amount of tax expense (benefit) allocated to accumulated other comprehensive income (loss) attributable to parent.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 97000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 149000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 231000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 232000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 232000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 232000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 232000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 232000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 232000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 210000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 246000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 284000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 146000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 146000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 146000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 146000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 146000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 146000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 179000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 188000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 28000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 130000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 130000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 130000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 130000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 130000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 45000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 16000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": -9000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": -51000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": -51000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioWellCapitalizedMinimum": {
        "label": "Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum",
        "description": "Ratio of minimum Common Equity Tier 1 risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.",
        "units": {
          "pure": [
            {
              "end": "2022-03-31",
              "val": 0.065,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.065,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.065,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.065,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.065,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.065,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.065,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.065,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.065,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.065,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.065,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "BankOwnedLifeInsurance": {
        "label": "Bank Owned Life Insurance",
        "description": "The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 116000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 116000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 116000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 116000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1326000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1334000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1342000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 586000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 586000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 586000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 586000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 586000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 586000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 530000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 104000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 104000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 105000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 105000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 105000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 105000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 105000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 105000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 106000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 106000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 107000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 106000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseAccumulatedAmortization": {
        "label": "Below Market Lease, Accumulated Amortization",
        "description": "Amount of accumulated amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 28000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 28000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 28000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 34000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseAmortizationIncomeAfterYearFive": {
        "label": "Below Market Lease, Amortization Income, after Year Five",
        "description": "Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 11000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 9000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 9000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 7000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 4000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseAmortizationIncomeNextTwelveMonths": {
        "label": "Below Market Lease, Amortization Income, Year One",
        "description": "Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 15000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 12000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 12000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 12000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 6000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 4000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseAmortizationIncomeYearFive": {
        "label": "Below Market Lease, Amortization Income, Year Five",
        "description": "Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseAmortizationIncomeYearFour": {
        "label": "Below Market Lease, Amortization Income, Year Four",
        "description": "Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseAmortizationIncomeYearThree": {
        "label": "Below Market Lease, Amortization Income, Year Three",
        "description": "Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 3000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseAmortizationIncomeYearTwo": {
        "label": "Below Market Lease, Amortization Income, Year Two",
        "description": "Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 11000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 6000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 6000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 4000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 3000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseGross": {
        "label": "Below Market Lease, Gross",
        "description": "Amount before amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 52000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 52000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-12-31",
              "val": 52000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 52000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 52000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 52000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 52000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 52000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "BelowMarketLeaseNet": {
        "label": "Below Market Lease, Net",
        "description": "Amount after amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 48000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 44000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 40000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 36000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 36000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 36000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2022-12-31",
              "val": 36000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 24000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 24000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 24000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 18000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "Capital": {
        "label": "Banking Regulation, Total Capital, Actual",
        "description": "Amount of total capital as defined by regulatory framework.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 5042000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 5042000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 5042000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 5042000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 12117000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 12396000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 11927000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 11799000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 11799000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 11799000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 11799000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 11799000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 11799000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 21764000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 22504000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 23351000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 23891000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 23891000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 23891000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 24610000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 24610000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 24945000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets": {
        "label": "Banking Regulation, Total Risk-Based Capital Ratio, Well Capitalized, Minimum",
        "description": "Ratio of minimum total risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.",
        "units": {
          "pure": [
            {
              "end": "2022-03-31",
              "val": 0.1,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.1,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.1,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.1,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.1,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.1,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.1,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.1,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.1,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.1,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.1,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "CapitalToRiskWeightedAssets": {
        "label": "Banking Regulation, Total Risk-Based Capital Ratio, Actual",
        "description": "Ratio of total risk-based capital to risk-weighted assets as defined by regulatory framework.",
        "units": {
          "pure": [
            {
              "end": "2021-12-31",
              "val": 0.1435,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0.1435,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0.1435,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0.1435,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.1447,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.1446,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.1346,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.1318,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0.1318,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0.1318,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0.1318,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0.1318,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0.1318,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.1486,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.1584,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.1564,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.1575,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.1575,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0.1575,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.1504,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0.1504,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.1371,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "CommonEquityTierOneCapital": {
        "label": "Banking Regulation, Common Equity Tier One Risk-Based Capital, Actual",
        "description": "Amount of Common Equity Tier 1 risk-based capital as defined by regulatory framework.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 4041000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4041000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 4041000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 4041000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9496000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 9724000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 9185000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 9021000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 9021000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 9021000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 9021000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 9021000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 9021000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 18344000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 19017000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 19762000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 20270000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 20270000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 20270000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 21256000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 21256000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 20285000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "CommonEquityTierOneCapitalRatio": {
        "label": "Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Actual",
        "description": "Ratio of Common Equity Tier 1 risk-based capital to risk-weighted assets as defined by regulatory framework.",
        "units": {
          "pure": [
            {
              "end": "2021-12-31",
              "val": 0.115,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0.115,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0.115,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0.115,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.1134,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.1135,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.1037,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.1008,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0.1008,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0.1008,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0.1008,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0.1008,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0.1008,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.1253,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.1338,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.1324,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.1336,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.1336,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0.1336,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.1299,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0.1299,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.1115,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DebtInstrumentCollateralAmount": {
        "label": "Debt Instrument, Collateral Amount",
        "description": "Amount of assets pledged to secure a debt instrument.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 24900000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 25800000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 26600000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 29200000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 29600000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 30000000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 30700000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss": {
        "label": "Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss",
        "description": "Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 22000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 22000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 22000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 22000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 26000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 25000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 29000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 33000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 30000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 35000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 67000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 87000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 87000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 87000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 87000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 87000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 87000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 121000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 136000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 145000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 177000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 177000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 177000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 177000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 177000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 178000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 175000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 172000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 157000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 157000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 184000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 9215000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 9215000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 9215000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 9215000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9726000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 9857000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 10083000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 9955000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 12923000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 17836000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 25791000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 27959000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 28502000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 34340000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 33381000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 35187000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 31952000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 31952000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 33663000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleExcludingAccruedInterest": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 9203000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 9203000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 9203000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 9203000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 9295000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 9210000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 9088000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 8995000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 8995000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 8995000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 8995000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 8995000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 8995000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 9061000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 11894000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 16661000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 19936000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 19936000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 19936000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 19936000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 19936000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 19936000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 24915000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 27053000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 28190000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 33750000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 33750000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 33750000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 33750000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 33750000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 33900000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 33060000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 34963000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 31790000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 31790000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 33314000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss": {
        "label": "Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss",
        "description": "Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at amortized cost (held-to-maturity).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 16000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 16000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 17000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 18000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 17000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 17000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 19000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 20000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 19000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 18000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 3809000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 3809000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 10074000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 9832000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 3809000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 3809000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 3809000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 3809000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 10074000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 9832000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 9661000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 10279000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 10279000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 10279000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 10279000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 10279000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 10279000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 10381000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 10201000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 10082000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 9979000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 9979000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 9979000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 9979000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 9979000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 9979000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 10050000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 10535000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 10391000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 10239000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 10239000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 10239000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 10239000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 10239000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 10324000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 10189000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 10051000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 9647000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 9647000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 9542000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DeferredIncomeTaxLiabilitiesNet": {
        "label": "Deferred Income Tax Liabilities, Net",
        "description": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 33000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 160000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 177000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 173000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 286000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 3551000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 3147000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 3627000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 3579000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 3545000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 3344000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 3561000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 3534000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanPlanAmendments": {
        "label": "Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment",
        "description": "Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -27000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -27000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -27000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            }
          ]
        }
      },
      "DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement": {
        "label": "Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement",
        "description": "Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 110000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 80000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 149000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 547000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 758000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 904000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 659000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 646000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 553000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 553000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 626000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 570000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 534000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 534000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 498000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DerivativeAssetFairValueGrossLiability": {
        "label": "Derivative Asset, Fair Value, Gross Liability",
        "description": "Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection": {
        "label": "Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election",
        "description": "Fair value, after effects of master netting arrangements, deduction of assets not subject to a master netting arrangement and elected not to be offset, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against an obligation to return collateral.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 68000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 11000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 14000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 22000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 113000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 115000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 49000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 138000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 138000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 138000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 138000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 138000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 138000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 64000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 63000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 205000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 73000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "DerivativeAssets": {
        "label": "Derivative Asset",
        "description": "Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 110000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 80000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 149000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 159000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 547000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 758000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 904000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 640000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 659000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 646000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 553000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 660000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 553000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 626000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 570000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 534000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 534000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 498000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DerivativeCollateralObligationToReturnCash": {
        "label": "Derivative, Collateral, Obligation to Return Cash",
        "description": "Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 29000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 61000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 129000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 124000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 124000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 124000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 124000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 124000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 124000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 255000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 533000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 783000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 405000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 534000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 533000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 234000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 539000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 539000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 539000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 539000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 539000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 328000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 222000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 218000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 204000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 204000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 266000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DerivativeCollateralRightToReclaimCash": {
        "label": "Derivative, Collateral, Right to Reclaim Cash",
        "description": "Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 16000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 39000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 6000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 8000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 46000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 18000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 108000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 75000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 62000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 62000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 4000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DerivativeLiabilities": {
        "label": "Derivative Liability",
        "description": "Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 204000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 308000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 500000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 791000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 825000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 912000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 654000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 636000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 507000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 541000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 631000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 520000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 494000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 494000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 448000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DerivativeLiabilityFairValueGrossAsset": {
        "label": "Derivative Liability, Fair Value, Gross Asset",
        "description": "Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement": {
        "label": "Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement",
        "description": "Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 204000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 308000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 500000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 486000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 791000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 825000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 912000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 636000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 654000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 636000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 507000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 625000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 541000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 631000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 520000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 494000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 494000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 448000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection": {
        "label": "Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election",
        "description": "Fair value, after effects of master netting arrangements, deduction of liabilities not subject to a master netting arrangement and elected not to be offset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, offset against the right to receive collateral.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 189000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 300000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 494000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 473000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 473000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 473000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 473000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 596000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 676000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 834000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 585000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 583000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 347000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 575000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "DerivativeNotionalAmount": {
        "label": "Derivative, Notional Amount",
        "description": "Nominal or face amount used to calculate payment on derivative.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 21214000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 20146000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "DirectCostsOfLeasedAndRentedPropertyOrEquipment": {
        "label": "Direct Costs of Leased and Rented Property or Equipment",
        "description": "Amount of expense incurred and directly related to generating revenue by lessor from operating lease of rented property and equipment.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 43000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 43000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 90000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 90000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 47000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 47000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 142000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 142000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 52000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 52000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 189000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 189000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 189000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 189000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 56000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 56000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 112000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 112000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 56000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 56000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 163000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 163000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 51000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 51000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 222000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 222000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 222000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 222000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 45000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 45000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 105000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 105000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 60000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 60000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 164000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 164000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 59000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 59000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 219000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 219000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 58000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 58000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 113000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 55000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 180000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 67000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 244000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 65000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DirectFinancingLeaseLeaseReceivable": {
        "label": "Direct Financing Lease, Lease Receivable",
        "description": "Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term, guaranteed by lessee or other third party unrelated to lessor, from direct financing lease.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 246000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 246000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 246000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 246000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1882000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1839000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1803000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1786000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1786000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1786000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1780000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1780000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1780000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1764000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1764000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1827000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DirectFinancingLeaseNetInvestmentInLease": {
        "label": "Direct Financing Lease, Net Investment in Lease",
        "description": "Amount of net investment in direct financing lease.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 271000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 271000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 2165000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 2119000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "DirectFinancingLeaseUnguaranteedResidualAsset": {
        "label": "Direct Financing Lease, Unguaranteed Residual Asset",
        "description": "Present value expected to be derived from underlying asset, following end of lease term, not guaranteed by lessee or other third party unrelated to lessor.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 25000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 25000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 25000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 25000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 283000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 280000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 318000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 317000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 317000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 317000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 262000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 262000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 262000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 235000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 235000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 209000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DividendIncomeEquitySecuritiesOperating": {
        "label": "Dividend Income, Equity Securities, Operating",
        "description": "Amount of dividend income on investment in equity security, classified as operating.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "EquitySecuritiesWithoutReadilyDeterminableFairValueAmount": {
        "label": "Equity Securities without Readily Determinable Fair Value, Amount",
        "description": "Amount of investment in equity security without readily determinable fair value.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 67000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 69000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 55000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 58000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 62000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 58000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 95000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 103000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 103000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 103000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 103000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 103000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 103000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 107000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 108000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 127000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 127000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss": {
        "label": "Financing Receivable, Accrued Interest, after Allowance for Credit Loss",
        "description": "Amount, after allowance for credit loss, of accrued interest on financing receivable.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 87000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 87000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 87000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 87000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 135000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 142000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 171000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 203000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 203000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 203000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 203000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 203000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 203000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 643000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 601000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 620000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 625000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 625000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 625000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 625000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 625000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 625000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 633000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 664000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 615000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 603000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 603000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 603000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 603000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 603000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 601000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 605000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 637000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 635000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 635000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 639000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2019-12-31",
              "val": 225000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 225000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2020-12-31",
              "val": 225000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2020-12-31",
              "val": 225000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2020-12-31",
              "val": 225000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2020-12-31",
              "val": 225000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2020-12-31",
              "val": 225000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 211000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-03-31",
              "val": 210000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 189000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-06-30",
              "val": 189000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 183000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2021-12-31",
              "val": 178000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 848000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 848000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-03-31",
              "val": 848000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 848000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 850000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-06-30",
              "val": 850000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2022-06-30",
              "val": 850000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-06-30",
              "val": 850000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 882000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2022-09-30",
              "val": 882000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2022-12-31",
              "val": 922000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1605000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2023-03-31",
              "val": 1605000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-03-31",
              "val": 1605000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-03-31",
              "val": 1605000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1637000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-06-30",
              "val": 1637000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-06-30",
              "val": 1637000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-06-30",
              "val": 1637000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1673000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-09-30",
              "val": 1673000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 1747000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 1737000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2024-03-31",
              "val": 1737000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2024-03-31",
              "val": 1737000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-03-31",
              "val": 1737000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 1700000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2024-06-30",
              "val": 1700000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2024-06-30",
              "val": 1700000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-06-30",
              "val": 1700000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 1678000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2024-09-30",
              "val": 1678000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 1676000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1676000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 1676000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 1676000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 1676000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2024-12-31",
              "val": 1676000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 1680000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2025-03-31",
              "val": 1680000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2025-03-31",
              "val": 1680000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 1672000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2025-06-30",
              "val": 1672000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 1652000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1566000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 1566000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1558000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 32194000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 32194000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 32194000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 32194000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 64676000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 66885000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 68908000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 69859000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 69859000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 69859000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 69859000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 69859000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 69859000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 136683000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 131378000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 131529000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 131555000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 131555000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 131555000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 131555000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 131555000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 131555000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 133633000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 137641000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 137017000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 138545000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 138545000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 138545000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 138545000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 138545000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 139678000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 139597000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 143106000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 146364000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 146364000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 147134000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 32792000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-03-31",
              "val": 33181000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 32690000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 32516000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 32372000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 32372000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 32372000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 32372000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2021-12-31",
              "val": 32372000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2021-12-31",
              "val": 32372000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 65524000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 65524000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 67735000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-06-30",
              "val": 67735000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 69790000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2022-09-30",
              "val": 69790000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 70781000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 70781000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 70781000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 70781000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 70781000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 70781000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2022-12-31",
              "val": 70781000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 138288000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2023-03-31",
              "val": 138288000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 133015000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-06-30",
              "val": 133015000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 133202000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-09-30",
              "val": 133202000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 133302000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 133302000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 133302000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 133302000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 133302000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 133302000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2023-12-31",
              "val": 133302000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 135370000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2024-03-31",
              "val": 135370000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 139341000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2024-06-30",
              "val": 139341000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 138695000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2024-09-30",
              "val": 138695000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 140221000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 140221000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 140221000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 140221000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 140221000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 141358000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2025-03-31",
              "val": 141358000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 141269000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 144758000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 147930000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 147930000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 148692000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "GainLossOnSaleOfLeasedAssetsNetOperatingLeases": {
        "label": "Gain (Loss) on Sale of Leased Assets, Net, Operating Leases",
        "description": "The net gain (loss) arising from the lessor's sale of assets held- or available-for-lease under contractual arrangements classified as operating leases.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 6000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 6000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 11000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 11000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 5000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 4000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 4000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 8000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 8000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 4000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 18000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 18000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 10000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 10000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 10000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 10000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 14000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 14000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 4000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 4000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 5000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 5000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 30000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 30000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 5000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 5000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 13000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 8000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 16000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 3000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 30000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 11000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "IncreaseDecreaseInAssetsHeldForSale": {
        "label": "Increase (Decrease) in Assets Held-for-sale",
        "description": "The increase (decrease) during the period in book value of long-lived assets that the reporting entity plans to sell within one year (or one business cycle).",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1042000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 15000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 597000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 861000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1123000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1123000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 1123000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 183000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 235000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 342000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 342000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 320000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 428000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 499000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 499000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 499000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 499000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 82000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 82000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 286000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 286000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 503000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 503000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 740000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 740000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 740000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 740000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 209000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 209000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 547000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 547000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 799000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 799000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1078000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1078000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 297000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 297000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 678000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1011000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1401000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 289000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "IncrementalCommonSharesAttributableToShareBasedPaymentArrangements": {
        "label": "Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements",
        "description": "Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.",
        "units": {
          "shares": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 18848,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 18848,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 11477,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 11477,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 18095,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 18095,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 16017,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 16017,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 18020,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 18020,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 18020,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 18020,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 13016,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 13016,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 11759,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 11759,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 9804,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 9804,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 11665,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 11665,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 10823,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 10823,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11711,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11711,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11711,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 11711,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3140,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3140,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1572,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1572,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1045,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1045,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 783,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 783,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestExpenseBorrowings": {
        "label": "Interest Expense, Borrowings",
        "description": "Aggregate amount of interest expense on all borrowings.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 29000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 6000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 14000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 22000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 28000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 28000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 28000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 22000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 22000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 37000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 37000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 70000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 70000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 33000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 33000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 132000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 132000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 132000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 132000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 73000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 73000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 490000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 490000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 417000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 417000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 841000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 841000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 351000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 351000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1182000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1182000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1182000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1182000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 339000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 339000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 673000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 673000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 334000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 334000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1011000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1011000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 338000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 338000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1346000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1346000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 339000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 339000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 695000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 356000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1048000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 353000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1405000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 332000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestIncomeSecuritiesTaxable": {
        "label": "Interest Income, Securities, Operating, Taxable",
        "description": "Amount of operating interest income, including amortization and accretion of premiums and discounts, on securities subject to state, federal and other income tax.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 144000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 30000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 66000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 36000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 106000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 40000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 145000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 145000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 145000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 83000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 83000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 172000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 172000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 89000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 89000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 262000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 262000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 90000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 90000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 354000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 354000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 354000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 354000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 107000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 107000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 227000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 227000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 120000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 120000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 407000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 407000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 180000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 180000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 648000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 648000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 648000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 648000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 282000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 282000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 612000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 612000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 330000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 330000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 970000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 970000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 358000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 358000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1347000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1347000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 414000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 414000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 833000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 419000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1266000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 433000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1690000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 384000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestPayableCurrentAndNoncurrent": {
        "label": "Interest Payable",
        "description": "Amount of interest payable on debt, including, but not limited to, trade payables.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 8000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 8000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 24000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 27000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 35000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 57000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 57000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 57000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 57000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 57000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 57000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 150000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 121000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 146000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 137000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 137000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 137000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 137000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 137000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 137000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 141000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 159000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 149000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 134000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "LaborAndRelatedExpense": {
        "label": "Labor and Related Expense",
        "description": "Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 722000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 184000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 372000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 188000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 566000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 194000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 759000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 759000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 759000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 352000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 356000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 693000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 701000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 341000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 345000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1044000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1054000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 351000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 353000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1396000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1408000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1408000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1408000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 420000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 420000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1195000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1195000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 775000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 775000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1922000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1922000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 727000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 727000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2636000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2636000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2636000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2636000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 744000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 744000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1489000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1489000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 745000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 745000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2277000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2277000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 788000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 788000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 3078000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 3078000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 818000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 818000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1628000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 810000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 2445000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 817000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3294000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 869000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "LeaseIncome": {
        "label": "Lease Income",
        "description": "Amount of lease income from operating, direct financing, and sales-type leases. Includes, but is not limited to, variable lease payments, interest income, profit (loss) recognized at commencement, and lease payments paid and payable to lessor.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 23000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 14000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 266000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 266000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 537000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 537000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 273000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 273000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 818000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 818000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 280000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 280000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1104000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1104000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1104000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1104000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 294000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 294000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 592000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 592000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 299000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 299000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 901000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 901000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 308000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 308000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1213000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1213000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1213000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1213000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 315000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 315000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 634000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 634000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 319000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 319000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 956000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 956000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 322000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 322000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1288000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1288000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 328000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 328000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 661000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 333000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 993000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 332000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1332000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 338000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "LessorOperatingLeasePaymentsToBeReceived": {
        "label": "Lessor, Operating Lease, Payments to be Received",
        "description": "Amount of lease payments to be received by lessor for operating lease.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 2014000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 2013000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 2061000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2171000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 2757000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2757000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 3045000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 3061000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LessorOperatingLeasePaymentsToBeReceivedFiveYears": {
        "label": "Lessor, Operating Lease, Payment to be Received, Year Five",
        "description": "Amount of lease payment to be received by lessor for operating lease in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 118000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 85000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 99000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 131000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 189000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 189000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 216000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 216000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LessorOperatingLeasePaymentsToBeReceivedFourYears": {
        "label": "Lessor, Operating Lease, Payment to be Received, Year Four",
        "description": "Amount of lease payment to be received by lessor for operating lease in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 196000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 156000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 179000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 217000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 316000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 316000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 361000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 364000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths": {
        "label": "Lessor, Operating Lease, Payment to be Received, Year One",
        "description": "Amount of lease payment to be received by lessor for operating lease in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 636000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 565000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 611000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 655000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 786000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 786000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 864000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 864000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LessorOperatingLeasePaymentsToBeReceivedThereafter": {
        "label": "Lessor, Operating Lease, Payment to be Received, after Year Five",
        "description": "Amount of lease payment to be received by lessor for operating lease after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 262000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 214000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 218000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 322000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 408000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 408000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 348000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 349000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LessorOperatingLeasePaymentsToBeReceivedThreeYears": {
        "label": "Lessor, Operating Lease, Payment to be Received, Year Three",
        "description": "Amount of lease payment to be received by lessor for operating lease in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 323000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 251000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 285000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 339000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 449000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 449000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 543000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 547000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LessorOperatingLeasePaymentsToBeReceivedTwoYears": {
        "label": "Lessor, Operating Lease, Payment to be Received, Year Two",
        "description": "Amount of lease payment to be received by lessor for operating lease in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 479000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 404000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 448000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 507000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 609000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 609000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 713000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 721000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LeveragedLeasesIncomeStatementIncomeFromLeveragedLeases": {
        "label": "Leveraged Leases, Income Statement, Income from Leveraged Leases",
        "description": "Pretax lease income allocated in proportionate amounts from unearned income.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 5000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 5000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 14000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 14000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 5000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 20000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 5000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 5000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 9000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 9000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 4000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 11000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 11000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 3000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 3000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 4000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 4000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 3000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentInLeveragedLeasesNet": {
        "label": "Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Investment in Leveraged Leases, Net",
        "description": "The net investment in arrangements meeting the criteria for classification as leveraged leases including deferred taxes.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 55000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 59000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 63000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 68000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 68000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 68000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 17000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "LineOfCreditFacilityRemainingBorrowingCapacity": {
        "label": "Line of Credit Facility, Remaining Borrowing Capacity",
        "description": "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 75000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 75000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 100000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 100000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 100000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            }
          ]
        }
      },
      "LoansAndLeasesReceivableImpairedCommitmentToLend": {
        "label": "Financing Receivable, Troubled Debt Restructuring, Commitment to Lend",
        "description": "Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 200000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 400000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 400000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 400000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 400000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-06-30",
              "val": 12000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 25000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 13000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 25000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 39000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 44000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 55000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 55000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 55000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 55000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 55000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 6000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 13000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 17000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 60000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 60000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 19000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "LossContingencyRangeOfPossibleLossPortionNotAccrued": {
        "label": "Loss Contingency, Range of Possible Loss, Portion Not Accrued",
        "description": "The difference between the maximum amount of estimated loss and the amount recorded as of the balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 10000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 10000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 10000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 10000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 10000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 10000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 10000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 10000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 10000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 10000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 20000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 25000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 25000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "NumberOfOperatingSegments": {
        "label": "Number of Operating Segments",
        "description": "Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.",
        "units": {
          "segment": [
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 3,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 3,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 3,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            }
          ]
        }
      },
      "OciBeforeReclassificationsNetOfTaxAttributableToParent": {
        "label": "OCI, before Reclassifications, Net of Tax, Attributable to Parent",
        "description": "Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -44000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -25000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -33000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -318000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -318000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -481000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -481000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -747000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -747000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -755000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -755000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -755000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 53000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 53000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -50000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -50000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -165000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -165000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 224000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 224000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 224000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -91000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 329000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 329000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 45000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 45000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 249000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 249000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 334000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 404000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 533000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -155000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OffBalanceSheetCreditLossLiability": {
        "label": "Off-Balance Sheet, Credit Loss, Liability",
        "description": "Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 12000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 12000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 12000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 12000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 75000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 81000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 91000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 106000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 106000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 106000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 106000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 106000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 106000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 352000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 335000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 318000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 316000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 316000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 316000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 316000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 316000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 316000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 287000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 287000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 281000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 278000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 278000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 260000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 260000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 228000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "OperatingExpenses": {
        "label": "Operating Expenses",
        "description": "Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 297000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 597000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 300000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 911000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 314000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 810000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 1555000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 745000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 2315000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 760000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            }
          ]
        }
      },
      "OperatingLeaseLeaseIncome": {
        "label": "Operating Lease, Lease Income",
        "description": "Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 208000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 208000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 421000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 421000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 213000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 213000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 640000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 640000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 219000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 219000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 864000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 864000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 864000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 864000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 233000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 233000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 471000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 471000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 238000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 238000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 719000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 719000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 248000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 248000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 971000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 971000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 971000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 971000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 255000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 255000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 514000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 514000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 259000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 259000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 776000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 776000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 262000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 262000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1048000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1048000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 270000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 270000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 542000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 272000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 815000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 273000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1096000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 281000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OperatingLeaseLeaseIncomeLeasePayments": {
        "label": "Operating Lease, Lease Income, Lease Payments",
        "description": "Amount of operating lease income from lease payments paid and payable to lessor. Excludes variable lease payments not included in measurement of lease receivable.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 195000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 195000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 391000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 391000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 196000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 196000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 592000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 592000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 201000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 201000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 796000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 796000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 796000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 796000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 214000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 214000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 435000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 435000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 221000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 221000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 664000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 664000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 229000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 229000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 895000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 895000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 895000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 895000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 237000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 237000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 478000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 478000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 241000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 241000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 714000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 714000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 236000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 236000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 966000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 966000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 254000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 254000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 512000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 258000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 772000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 261000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1037000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 268000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease": {
        "label": "Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease",
        "description": "The total depreciation charge recorded for property subject to or held for lease.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 81000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 81000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 170000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 170000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 89000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 89000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 257000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 257000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 87000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 87000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 345000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 89000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 89000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 180000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 180000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 91000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 91000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 275000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 275000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 95000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 95000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 371000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 371000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 371000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 371000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 96000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 96000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 194000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 194000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 98000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 98000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 293000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 293000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 99000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 99000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 394000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 394000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 98000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 98000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 198000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 100000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 296000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 98000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 398000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 101000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OperatingLeaseVariableLeaseIncome": {
        "label": "Operating Lease, Variable Lease Income",
        "description": "Amount of operating lease income from variable lease payments paid and payable to lessor, excluding amount included in measurement of lease receivable.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 13000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 13000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 30000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 30000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 48000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 48000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 18000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 18000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 68000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 68000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 68000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 68000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 19000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 19000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 36000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 36000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 17000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 17000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 55000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 55000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 19000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 19000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 76000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 18000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 18000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 36000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 36000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 18000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 18000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 62000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 62000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 26000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 26000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 82000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 82000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 16000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 16000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 30000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 14000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 43000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 12000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 59000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 13000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent": {
        "label": "Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent",
        "description": "Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 73000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -51000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -44000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -59000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -15000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -88000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -88000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -88000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -317000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -318000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -481000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -481000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -163000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -163000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -747000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -747000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -266000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -266000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -730000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -730000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -730000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -730000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 58000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 58000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -42000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -42000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -100000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -100000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -150000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -150000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -108000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -108000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 162000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 162000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 162000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 162000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -91000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -91000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -113000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -113000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -22000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -22000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 325000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 325000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 438000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 438000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -7000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -7000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 239000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 239000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 328000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 89000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 400000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 72000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 447000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -139000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent": {
        "label": "Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent",
        "description": "Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -62000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": -5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -16000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -6000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -97000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -97000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -97000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -2000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -5000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -7000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 16000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -8000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -8000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -4000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 4000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 4000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -4000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -81000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -81000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -81000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -81000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 8000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 8000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 8000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 8000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 8000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 8000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -44000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -44000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -75000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent": {
        "label": "Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent",
        "description": "Amount before tax of other comprehensive income (loss) attributable to parent entity.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -59000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -44000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 15000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -57000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -415000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -415000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -627000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -627000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -212000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -212000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -973000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -973000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -346000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -346000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -980000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -980000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -980000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 88000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 88000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -51000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -51000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -139000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -139000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -197000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -197000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -146000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -146000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 330000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 330000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 330000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -124000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -124000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -161000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -161000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -37000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -37000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 450000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 450000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 611000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 611000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 62000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 62000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 331000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 331000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 445000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 114000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 540000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 95000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 709000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -208000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent": {
        "label": "Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent",
        "description": "Amount after tax of other comprehensive income (loss) attributable to parent entity.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 139000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -46000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -34000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 12000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -44000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -10000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -315000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -315000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -475000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -475000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -160000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -160000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -739000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -739000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -264000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -264000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -745000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -745000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -745000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -745000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 66000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 66000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -37000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -37000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -103000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -103000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -145000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -145000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -108000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -108000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 244000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 244000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 244000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 244000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -91000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -91000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -119000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -119000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -28000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -28000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 332000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 332000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 451000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 451000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 46000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 46000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 246000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 246000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 331000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 85000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 401000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 70000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 528000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -155000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossTaxPortionAttributableToParent1": {
        "label": "Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent",
        "description": "Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -13000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 3000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -100000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -100000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -152000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -152000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -52000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": -52000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -234000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -234000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -82000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": -82000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -235000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -235000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -235000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 22000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 22000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -14000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -14000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -36000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -36000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -52000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -52000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -38000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -38000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 86000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 86000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 86000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -33000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -33000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -42000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -42000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -9000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -9000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 118000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 118000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 160000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 160000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 16000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 16000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 85000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 85000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 114000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 29000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 139000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 25000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 181000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -53000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherInterestAndDividendIncome": {
        "label": "Other Interest and Dividend Income",
        "description": "Amount, after discount, accretion and premium amortization, of interest income and dividend income classified as other.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 6000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            }
          ]
        }
      },
      "OtherOperatingActivitiesCashFlowStatement": {
        "label": "Other Operating Activities, Cash Flow Statement",
        "description": "Other cash or noncash adjustments to reconcile net income to cash provided by (used in) operating activities that are not separately disclosed in the statement of cash flows (for example, cash received or cash paid during the current period for miscellaneous operating activities, net change during the reporting period in other assets or other liabilities).",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -12000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -7000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -9000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -13000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -13000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -13000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -209000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -11000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -308000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -22000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -29000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -29000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -36000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -36000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -36000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -36000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -65000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -65000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -11000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -11000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -11000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -11000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -21000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -21000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -21000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -21000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 4000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 4000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -14000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -14000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -11000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -11000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -11000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -11000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -49000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -54000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -68000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherRealEstateAndForeclosedAssets": {
        "label": "Other Real Estate and Foreclosed Assets",
        "description": "Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 40000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 43000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 45000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 54000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 47000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 47000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 64000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 62000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 62000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 62000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 58000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 64000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 62000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 64000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 64000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 64000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 64000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 64000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 105000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 103000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 98000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 124000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 124000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 116000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "OtherSundryLiabilities": {
        "label": "Other Sundry Liabilities",
        "description": "The aggregate carrying amount, as of the balance sheets date, of obligations not otherwise itemized or categorized in the footnotes to the financial statements.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 215000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 215000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 131000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 132000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 364000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 469000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 504000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 426000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 464000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 464000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 464000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 464000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 464000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1360000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 879000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 854000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 822000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 868000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 855000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 822000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 855000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 849000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 927000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 1015000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            }
          ]
        }
      },
      "PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt": {
        "label": "Pledged Financial Instruments, Not Separately Reported, Loans Receivable, for Federal Home Loan Bank Debt",
        "description": "The carrying amount, as of the date of the latest financial statement presented, of loans receivable which are owned but transferred to serve as collateral for the payment of FHLB debt obligations, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 19900000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            }
          ]
        }
      },
      "PreferredStockDividendsIncomeStatementImpact": {
        "label": "Preferred Stock Dividends, Income Statement Impact",
        "description": "The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 4000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 14000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 7000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 7000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 24000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 24000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 36000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 36000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 12000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 12000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 50000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 50000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 50000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 50000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 14000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 14000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 29000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 29000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 15000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 15000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 44000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 44000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 15000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 15000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 59000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 59000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 59000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 59000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 15000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 15000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 31000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 31000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 16000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 16000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 46000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 46000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 61000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 61000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 15000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 15000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 29000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 14000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 43000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 14000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 57000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 26000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromPaymentsForOtherFinancingActivities": {
        "label": "Proceeds from (Payments for) Other Financing Activities",
        "description": "Amount of cash inflow (outflow) from financing activities classified as other.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -22000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -22000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -21000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -21000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -44000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -24000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -24000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -24000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -24000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -24000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -6000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -6000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -7000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -7000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -6000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -6000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -7000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -7000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -7000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -7000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -9000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -9000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -10000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -10000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -14000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -14000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -14000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -14000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "ProceedsFromSaleOfEquitySecuritiesFvNi": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 353000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 1000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 30000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 30000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 30000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 15000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "PropertyPlantAndEquipmentExcludingLessorAssetUnderOperatingLeaseAfterAccumulatedDepreciation": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 1233000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 1233000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 1233000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 1233000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1431000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1415000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1410000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1456000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1456000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1456000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1456000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1456000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1456000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 1743000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 1782000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 1768000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 1877000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1877000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 1877000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1877000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 1906000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-12-31",
              "val": 2006000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 2006000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 2447000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation": {
        "label": "Property Subject to or Available for Operating Lease, Accumulated Depreciation",
        "description": "The amount of accumulated depreciation, by major property class, recorded on property subject to or available for lease as of the balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2022-03-31",
              "val": 67000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 111000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 236000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 296000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 296000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 296000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 658000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 658000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 658000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 941000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 941000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1180000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "PropertySubjectToOrAvailableForOperatingLeaseNet": {
        "label": "Property Subject to or Available for Operating Lease, Net",
        "description": "The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1I"
            },
            {
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3I"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 7972000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2022-03-31",
              "val": 7972000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 7971000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2022-06-30",
              "val": 7971000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 7984000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2022-09-30",
              "val": 7984000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 8156000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 8156000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 8156000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 8156000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 8156000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 8156000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2022-12-31",
              "val": 8156000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 8331000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2023-03-31",
              "val": 8331000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 8531000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2023-06-30",
              "val": 8531000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 8661000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2023-09-30",
              "val": 8661000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 8746000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 8746000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 8746000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 8746000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 8746000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 8746000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2023-12-31",
              "val": 8746000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 8811000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2024-03-31",
              "val": 8811000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 8945000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2024-06-30",
              "val": 8945000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 9186000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2024-09-30",
              "val": 9186000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 9323000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 9323000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 9323000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 9323000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 9323000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 9371000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2025-03-31",
              "val": 9371000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 9466000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 9446000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 9621000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 9621000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 9685000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "ProvisionForLoanLossesExpensed": {
        "label": "Financing Receivable, Credit Loss, Expense (Reversal)",
        "description": "Amount of credit loss expense (reversal of expense) for financing receivable.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": -11000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -37000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 401000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 401000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 437000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 437000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 36000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 36000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 487000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 50000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 551000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 533000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 702000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 169000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2"
            }
          ]
        }
      },
      "ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent": {
        "label": "Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent",
        "description": "Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 2000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 11000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 6000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -3000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": -3000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -6000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": -6000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -8000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -10000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -10000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -13000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": -13000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -13000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -13000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -20000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -20000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -3000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -3000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 3000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 3000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 3000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 5000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesInterestIncome": {
        "label": "Sales-type and Direct Financing Leases, Interest Income",
        "description": "Amount of interest income from net investment in sales-type and direct financing leases.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 23000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 5000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 10000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 14000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 42000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 42000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 84000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 84000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 127000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 127000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 43000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 43000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 169000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 169000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 169000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 169000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 41000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 41000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 84000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 84000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 43000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 43000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 127000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 127000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 43000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 43000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 171000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 171000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 171000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 171000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 43000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 43000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 87000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 87000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 44000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 44000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 131000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 131000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 44000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 44000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 175000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 175000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 43000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 43000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 87000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 44000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 131000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 44000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 175000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 42000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ShareBasedCompensation": {
        "label": "Share-based Payment Arrangement, Noncash Expense",
        "description": "Amount of noncash expense for share-based payment arrangement.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-03-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2021Q1"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 12000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 12000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 14000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 14000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 17000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 17000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 19000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 1000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 4000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "TierOneLeverageCapital": {
        "label": "Banking Regulation, Tier One Leverage Capital, Actual",
        "description": "Amount of Tier 1 leverage capital as defined by regulatory framework.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 4380000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4380000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 4380000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 4380000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 10377000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 10605000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 10066000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 19225000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 19898000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 20643000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 21150000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 21150000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 21150000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 22137000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 22137000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 21660000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets": {
        "label": "Banking Regulation, Tier One Leverage Capital Ratio, Well Capitalized, Minimum",
        "description": "Ratio of minimum Tier 1 leverage capital to average assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.",
        "units": {
          "pure": [
            {
              "end": "2022-03-31",
              "val": 0.05,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.05,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.05,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.05,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.05,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.05,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.05,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.05,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.05,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.05,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.05,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TierOneLeverageCapitalToAverageAssets": {
        "label": "Banking Regulation, Tier One Leverage Capital Ratio, Actual",
        "description": "Ratio of Tier 1 capital to average assets as defined by regulatory framework.",
        "units": {
          "pure": [
            {
              "end": "2021-12-31",
              "val": 0.0759,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0.0759,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 0.0759,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0.0759,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 0.0955,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.0985,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.0931,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.0899,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 0.0899,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 0.0899,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0.0899,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0.0899,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0.0899,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.1672,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.095,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.0973,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.0983,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.0983,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 0.0983,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.099,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0.099,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.0929,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TierOneRiskBasedCapital": {
        "label": "Banking Regulation, Tier One Risk-Based Capital, Actual",
        "description": "Amount of Tier 1 risk-based capital as defined by regulatory framework.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 4380000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 4380000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 4380000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 4380000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 10377000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 10605000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 10066000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 9902000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 19225000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 19898000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 20643000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 21150000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 21150000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 21150000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 22137000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 22137000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 21660000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets": {
        "label": "Banking Regulation, Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum",
        "description": "Ratio of minimum Tier 1 risk-based capital to risk-weighted assets categorized as well capitalized as defined by regulatory framework for prompt corrective action.",
        "units": {
          "pure": [
            {
              "end": "2022-03-31",
              "val": 0.08,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 0.08,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0.08,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 0.08,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 0.08,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0.08,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0.08,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0.08,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0.08,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.08,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 0.08,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "TimeDepositsAtOrAboveFDICInsuranceLimit": {
        "label": "Time Deposits, at or Above FDIC Insurance Limit",
        "description": "Amount of time deposit liabilities, including certificates of deposit, in denominations that meet or exceed the Federal Deposit Insurance Corporation (FDIC) insurance limit.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 593000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 593000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 593000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 593000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 1600000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 1400000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 1500000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2220000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 2220000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 2220000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 2220000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 2220000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 2220000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 3740000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 4950000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 4230000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 4160000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 4160000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 4160000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 4160000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 4160000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 4160000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 4350000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 4120000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 3840000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 3800000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 3800000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 3260000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "UnsecuredDebt": {
        "label": "Unsecured Debt",
        "description": "Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-03-31",
              "val": 895000000,
              "accn": "0000798941-22-000040",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2022-05-10",
              "frame": "CY2022Q1I"
            },
            {
              "end": "2022-06-30",
              "val": 892000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "AccountsReceivableNet": {
        "label": "Accounts Receivable, after Allowance for Credit Loss",
        "description": "Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 862000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-06-30",
              "val": 939000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            }
          ]
        }
      },
      "BankOwnedLifeInsuranceIncome": {
        "label": "Bank Owned Life Insurance Income",
        "description": "Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 8000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 25000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 25000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 8000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 32000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 32000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 32000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 5000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 7000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 2000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 8000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 8000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 8000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "BelowMarketLeaseAmortizationIncomeRemainderOfFiscalYear": {
        "label": "Below Market Lease, Amortization Income, Remainder of Fiscal Year",
        "description": "Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 4000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            }
          ]
        }
      },
      "FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear": {
        "label": "Finance Lease, Liability, to be Paid, Remainder of Fiscal Year",
        "description": "Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in remainder of current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2022-06-30",
              "val": 1000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 7000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-06-30",
              "val": 100000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 50000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 63000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 63000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 63000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 63000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 63000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 63000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 161000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 74000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 111000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 123000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 123000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 123000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 123000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 123000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 158000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 152000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 131000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 23000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 11000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 5000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 17000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 6000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 26000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 26000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 18000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 37000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 37000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 19000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 19000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 52000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 52000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 15000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 15000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 67000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 12000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 12000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 31000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 31000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 19000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 19000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 54000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 54000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 23000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 23000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 78000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 78000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 78000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 78000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 25000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 25000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 52000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 52000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 27000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 27000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 84000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 84000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 32000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 32000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 117000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 117000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 23000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 23000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 48000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 25000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 70000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 22000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 101000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 21000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 45000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 16000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 7000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 27000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 11000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 36000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 33000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 74000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 74000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 41000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 41000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 107000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 107000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 33000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 33000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 146000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 146000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 146000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 146000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 62000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 62000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 238000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 238000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 176000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 176000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 437000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 437000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 199000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 199000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 638000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 638000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 638000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 638000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 128000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 128000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 287000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 287000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 159000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 159000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 464000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 464000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 177000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 177000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 657000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 657000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 167000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 167000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 311000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 144000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 567000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 256000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 741000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 132000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 58000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": -31000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": -20000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": -32000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": -1000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -37000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -37000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -37000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 464000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 506000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 506000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 42000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 566000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 487000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 60000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 50000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 645000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 551000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 551000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 551000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 783000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 533000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 934000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 702000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 151000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 169000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 914000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 914000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 212000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 212000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1165000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1165000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1165000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1165000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 93000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 188000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 95000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 311000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 123000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 469000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 469000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 530000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestNonaccrual": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 121000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "end": "2021-12-31",
              "val": 121000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 121000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-06-30",
              "val": 513000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 454000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 627000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 627000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 627000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 627000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 627000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 627000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 828000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 929000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 899000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 969000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 969000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 969000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 969000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 969000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 969000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 1074000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 1141000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 1244000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 1184000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1184000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 1184000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 1184000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 1184000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 1206000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 1319000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 1406000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1307000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 1307000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1429000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestPurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "end": "2022-01-03",
              "val": 272000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-01-03",
              "val": 272000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021Q4I"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 284000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 272000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-03",
              "end": "2022-06-30",
              "val": 272000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 272000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-03",
              "end": "2022-09-30",
              "val": 272000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 272000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2022-01-03",
              "end": "2022-12-31",
              "val": 272000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 200000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 200000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 220000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 220000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 20000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 220000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 220000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 220000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 220000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 220000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 220000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear": {
        "label": "Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year",
        "description": "Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2022-06-30",
              "val": 27000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 8000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            }
          ]
        }
      },
      "LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear": {
        "label": "Lessor, Operating Lease, Payment to be Received, Remainder of Fiscal Year",
        "description": "Amount of lease payment to be received by lessor for operating lease in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-06-30",
              "val": 338000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 221000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            }
          ]
        }
      },
      "MarketingExpense": {
        "label": "Marketing Expense",
        "description": "Expenditures for planning and executing the conception, pricing, promotion, and distribution of ideas, goods, and services. Costs of public relations and corporate promotions are typically considered to be marketing costs.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 2000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 7000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 3000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 8000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 17000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 9000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 32000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 32000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 15000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 15000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 53000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 53000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 53000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 53000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 15000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 15000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 56000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 56000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 41000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 41000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 81000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 78000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 25000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 22000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 102000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 102000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 102000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 102000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 14000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 14000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 32000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 32000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 18000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 18000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 52000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 52000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 20000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 20000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 76000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 76000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 32000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 32000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 64000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 32000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 97000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 33000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 142000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 30000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PaymentsToAcquireEquipmentOnLease": {
        "label": "Payments to Acquire Equipment on Lease",
        "description": "The cash outflow for payments to acquire rented equipment which is recorded as an asset.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 0,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 226000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 339000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 339000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 464000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 464000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 771000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 771000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 771000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 771000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 288000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 288000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 586000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 586000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 815000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 815000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1023000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1023000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1023000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1023000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 191000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 191000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 428000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 428000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 793000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 793000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1106000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1106000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 170000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 170000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 385000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 522000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 852000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 194000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProfessionalFees": {
        "label": "Professional Fees",
        "description": "A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 17000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-06-30",
              "val": 8000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2021-04-01",
              "end": "2021-06-30",
              "val": 4000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2021Q2"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-07-01",
              "end": "2021-09-30",
              "val": 5000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021Q3"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 20000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 12000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 31000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 23000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 15000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-04-01",
              "end": "2022-06-30",
              "val": 11000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2022Q2"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 44000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 34000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 13000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 11000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 57000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 45000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 45000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 45000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 12000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 11000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 32000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 31000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 21000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 20000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 44000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 43000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 12000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 12000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 73000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 73000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 71000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 71000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 25000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 25000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 49000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 49000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 24000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 24000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 91000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 91000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 42000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 42000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 121000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 121000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 25000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 25000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 55000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 30000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 81000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 26000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 115000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 24000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedRemainderOfFiscalYear": {
        "label": "Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Remainder of Fiscal Year",
        "description": "Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2022-06-30",
              "val": 470000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2022-09-30",
              "val": 245000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            }
          ]
        }
      },
      "StockIssuedDuringPeriodValueAcquisitions": {
        "label": "Stock Issued During Period, Value, Acquisitions",
        "description": "Value of stock issued pursuant to acquisitions during the period.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 340000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 5279000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 5279000000,
              "accn": "0000798941-22-000049",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2022-08-05"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 5279000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 5279000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 5279000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5279000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5279000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5279000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5279000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            }
          ]
        }
      },
      "DebtLongtermAndShorttermCombinedAmount": {
        "label": "Debt, Long-term and Short-term, Combined Amount",
        "description": "Represents the aggregate of total long-term debt, including current maturities and short-term debt.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 1784000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 1784000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-09-30",
              "val": 8343000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 6645000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 6645000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 6645000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 6645000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 6645000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 6645000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 46094000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 40139000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 37712000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 37654000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 37654000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 37654000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 37654000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 37654000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 37654000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 37540000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 37458000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 37161000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 37051000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 37051000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 37051000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 37051000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 37051000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 38406000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 38112000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 38675000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 36008000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 36008000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 33962000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 9215000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 9215000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-09-30",
              "val": 10083000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 9967000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 9955000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 12923000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 17836000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 20688000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 25791000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 27959000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 28502000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 34512000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 34340000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 33381000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 35187000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 31952000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 31952000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 33663000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDate": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-09-30",
              "val": 53000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 51000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 2000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 2000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 27000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 27000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 27000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 186000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 429000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 429000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 429000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 429000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 429000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 450000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 467000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 505000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 307000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 307000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 369000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DeferredCompensationSharebasedArrangementsLiabilityCurrentAndNoncurrent": {
        "label": "Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent",
        "description": "Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 84000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 84000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-09-30",
              "val": 199000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 267000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 267000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 267000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 267000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 267000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 267000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 156000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 369000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 518000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 676000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 676000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 689000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 676000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 689000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 676000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 283000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 434000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 570000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 705000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 705000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 659000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DirectFinancingLeaseNetInvestmentInLeaseExcludingAccruedInterestBeforeAllowanceForCreditLoss": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 271000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 271000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-09-30",
              "val": 2121000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 2103000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 2103000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 2103000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 2042000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 2042000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 2042000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1999000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1999000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 2036000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate": {
        "label": "Federal Home Loan Bank, Advance, Maturity, Year One",
        "description": "Amount of advance from Federal Home Loan Bank (FHLBank) maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-09-30",
              "val": 2550000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3I"
            },
            {
              "end": "2022-12-31",
              "val": 1750000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1750000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "end": "2022-12-31",
              "val": 1750000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 1750000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 1750000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1750000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-03-31",
              "val": 500000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            }
          ]
        }
      },
      "ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase": {
        "label": "Proceeds from (Payments for) in Securities Sold under Agreements to Repurchase",
        "description": "The cash flow from investments sold under the agreement to repurchase such investment.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": -97000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 22000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -52000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -52000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -52000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 27000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 57000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -11000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": -11000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -153000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -153000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -153000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -153000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 63000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 63000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 9000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 9000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 7000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 7000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 39000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -90000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -90000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -99000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -99000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -94000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -94000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -118000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -118000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 83000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 83000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 104000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 56000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -143000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -54000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromShortTermDebt": {
        "label": "Proceeds from Short-term Debt",
        "description": "The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-09-30",
              "val": 0,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 3000000000,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 3000000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3105000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3105000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3105000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 3105000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 500000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 500000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 500000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 500000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 500000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 500000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 500000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate": {
        "label": "Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate",
        "description": "Discount rate used to estimate the fair value of servicing assets and servicing liabilities.",
        "units": {
          "pure": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.0855,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0.0855,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0.0962,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.0962,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.0962,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.0962,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.102,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.102,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "StockRepurchasedAndRetiredDuringPeriodShares": {
        "label": "Stock Repurchased and Retired During Period, Shares",
        "description": "Number of shares that have been repurchased and retired during the period.",
        "units": {
          "shares": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 813090,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 1027414,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 1027414,
              "accn": "0000798941-22-000059",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-11-04",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1500000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022"
            }
          ]
        }
      },
      "DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible": {
        "label": "Decrease in Unrecognized Tax Benefits is Reasonably Possible",
        "description": "Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.",
        "units": {
          "USD": [
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 10000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 10000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsTaxCreditCarryforwards": {
        "label": "Deferred Tax Assets, Tax Credit Carryforwards",
        "description": "Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 176000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 176000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 176000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 21000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 21000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 21000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 79000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 79000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 75000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals": {
        "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals",
        "description": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 6000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 37000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 104000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 104000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 104000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 53000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesLeasingArrangements": {
        "label": "Deferred Tax Liabilities, Leasing Arrangements",
        "description": "Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1311000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1311000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1311000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1729000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1729000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1729000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1847000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1847000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1938000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilitiesPrepaidExpenses": {
        "label": "Deferred Tax Liabilities, Prepaid Expenses",
        "description": "Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            }
          ]
        }
      },
      "DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries": {
        "label": "Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries",
        "description": "Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of foreign subsidiaries.",
        "units": {
          "USD": [
            {
              "end": "2022-12-31",
              "val": 18000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 18000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 28000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate": {
        "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate",
        "description": "Weighted-average interest crediting rate used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, cash balance and other defined benefit plans with promised interest crediting rate.",
        "units": {
          "pure": [
            {
              "end": "2022-12-31",
              "val": 0.0425,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostWeightedAverageInterestCreditingRate": {
        "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate",
        "description": "Weighted-average interest crediting rate used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, cash balance and other defined benefit plans with promised interest crediting rate.",
        "units": {
          "pure": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.015,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.015,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.015,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0425,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0425,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "DepreciationDepletionAndAmortization": {
        "label": "Depreciation, Depletion and Amortization",
        "description": "The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 109000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 107000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 107000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 107000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 142000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 142000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 142000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 142000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 225000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 225000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 225000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 225000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 276000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 276000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 314000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance": {
        "label": "Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.",
        "units": {
          "pure": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -0.004,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -0.004,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -0.004,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -0.004,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -0.003,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -0.003,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -0.003,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -0.003,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential": {
        "label": "Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.",
        "units": {
          "pure": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.001,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.001,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.001,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.001,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.001,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseLifeInsurance": {
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Life Insurance, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to life insurance expense.",
        "units": {
          "pure": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.035,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.035,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.035,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.035,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationOtherAdjustments": {
        "label": "Effective Income Tax Rate Reconciliation, Other Adjustments, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.",
        "units": {
          "pure": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.003,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -0.002,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -0.002,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -0.002,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.011,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.011,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.011,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.011,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.002,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.002,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.002,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.009,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes": {
        "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).",
        "units": {
          "pure": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.022,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.022,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.022,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.022,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.039,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.039,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.039,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.039,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.067,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.067,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.067,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -0.004,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.033,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.009,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.05,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationTaxCredits": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.",
        "units": {
          "pure": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0.009,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.007,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.007,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0.007,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.015,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.015,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.015,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0.015,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.002,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.002,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.002,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.012,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "FederalIncomeTaxExpenseBenefitContinuingOperations": {
        "label": "Federal Income Tax Expense (Benefit), Continuing Operations",
        "description": "Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 108000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 134000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 134000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 134000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 228000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 228000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 228000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 228000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 446000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 446000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 446000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 446000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 717000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 717000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 547000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "ForeignIncomeTaxExpenseBenefitContinuingOperations": {
        "label": "Foreign Income Tax Expense (Benefit), Continuing Operations",
        "description": "Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 9000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 9000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 9000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 15000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 15000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 15000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 15000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 12000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 11000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "GoodwillOtherIncreaseDecrease": {
        "label": "Goodwill, Other Increase (Decrease)",
        "description": "Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -4000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022"
            }
          ]
        }
      },
      "IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance": {
        "label": "Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -5000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -5000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -5000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -5000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -40000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -40000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -40000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -11000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "IncomeTaxReconciliationForeignIncomeTaxRateDifferential": {
        "label": "Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit).",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 5000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxReconciliationNondeductibleExpenseLifeInsurance": {
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Life Insurance, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible life insurance expense.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 48000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 48000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 48000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 48000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "IncomeTaxReconciliationOtherAdjustments": {
        "label": "Effective Income Tax Rate Reconciliation, Other Adjustments, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 1000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -2000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -2000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": -2000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 14000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 28000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 28000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 26000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 31000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "IncreaseInUnrecognizedTaxBenefitsIsReasonablyPossible": {
        "label": "Increase in Unrecognized Tax Benefits is Reasonably Possible",
        "description": "Amount of increase reasonably possible in the next twelve months for the unrecognized tax benefit.",
        "units": {
          "USD": [
            {
              "end": "2022-12-31",
              "val": 10000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "OtherDeferredCompensationArrangementsLiabilityCurrentAndNoncurrent": {
        "label": "Other Deferred Compensation Arrangements, Liability, Current and Noncurrent",
        "description": "Amount of the liabilities for deferred compensation arrangements classified as other.",
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 84000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 267000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            }
          ]
        }
      },
      "PropertyPlantAndEquipmentExcludingLessorAssetUnderOperatingLeaseAccumulatedDepreciation": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 1080000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1194000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 1194000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 1194000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1395000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 1395000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 1395000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1628000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 1628000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1903000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "PropertyPlantAndEquipmentExcludingLessorAssetUnderOperatingLeaseBeforeAccumulatedDepreciation": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2021-12-31",
              "val": 2313000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 2650000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "end": "2022-12-31",
              "val": 2650000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 2650000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 3272000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 3272000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 3272000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 3634000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 3634000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 4350000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "StateAndLocalIncomeTaxExpenseBenefitContinuingOperations": {
        "label": "State and Local Income Tax Expense (Benefit), Continuing Operations",
        "description": "Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations.",
        "units": {
          "USD": [
            {
              "start": "2020-01-01",
              "end": "2020-12-31",
              "val": 18000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2020"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 20000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 20000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 27000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 27000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 27000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 150000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 150000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 150000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 150000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 86000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 86000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 207000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "UndistributedEarningsOfForeignSubsidiaries": {
        "label": "Undistributed Earnings of Foreign Subsidiaries",
        "description": "Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.",
        "units": {
          "USD": [
            {
              "end": "2022-12-31",
              "val": 665000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 670000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 670000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 698000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued": {
        "label": "Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued",
        "description": "Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.",
        "units": {
          "USD": [
            {
              "end": "2022-12-31",
              "val": 3000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 3000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 9000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 14000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition": {
        "label": "Unrecognized Tax Benefits, Increase Resulting from Acquisition",
        "description": "Amount of increase in unrecognized tax benefits resulting from acquisitions.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 6000000,
              "accn": "0000798941-23-000017",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-24",
              "frame": "CY2021"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2023-03-31",
              "val": 4000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2023Q1I"
            },
            {
              "end": "2023-06-30",
              "val": 3000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "NoncashOrPartNoncashAcquisitionDebtAssumed1": {
        "label": "Noncash or Part Noncash Acquisition, Debt Assumed",
        "description": "\"The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"\"Part noncash\"\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.\"",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-03-31",
              "val": 0,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10",
              "frame": "CY2022Q1"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 35150000000,
              "accn": "0000798941-23-000030",
              "fy": 2023,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2023-05-10"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 35150000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 35808000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 35808000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 35808000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 35808000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 35808000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 35808000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 35808000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 35808000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestModifiedPeriod": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 92000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 399000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 399000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 315000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 315000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 640000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 640000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 295000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 295000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 599000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 599000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 599000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 599000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2023-04-01",
              "end": "2024-03-31",
              "val": 696000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 202000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 202000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2023-07-01",
              "end": "2024-06-30",
              "val": 663000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 467000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 467000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 293000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 293000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2023-10-01",
              "end": "2024-09-30",
              "val": 736000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 660000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 660000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 255000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 255000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 701000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 701000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 262000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 262000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 537000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 367000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 906000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 504000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1135000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 465000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableModificationToTotalFinancingReceivablesExcludingAccruedInterestPercent": {
        "label": null,
        "description": null,
        "units": {
          "pure": [
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0.0007,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0.003,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0.003,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0.0024,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0.0024,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0.0048,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0.0048,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0.0022,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0.0022,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0045,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0045,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0045,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0045,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0.0015,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0.0015,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0.0034,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0.0034,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0.0021,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0.0021,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0.0048,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0.0048,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0.0018,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0.0018,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.005,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.005,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0.0019,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0.0019,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 0.0038,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0.0026,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0.0063,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0.0035,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.0077,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0.0031,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PaymentsForSecuritiesPurchasedUnderAgreementsToResell": {
        "label": "Payments for Securities Purchased under Agreements to Resell",
        "description": "The cash outflow associated with agreements to purchase and then resell securities to counterparties (reverse repurchase agreements).",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-06-30",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 298000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 549000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            }
          ]
        }
      },
      "SecuritiesPurchasedUnderAgreementsToResell": {
        "label": "Securities Purchased under Agreements to Resell",
        "description": "Amount, after the effects of master netting arrangements, of funds outstanding loaned in the form of a security resale agreement between the entity and another party for the purchase and resale of identical or substantially the same securities at a date certain for a specified price. Includes purchases of participations in pools of securities that are subject to a resale agreement, assets not subject to a master netting arrangement and not elected to be offset.",
        "units": {
          "USD": [
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-06-30",
              "val": 298000000,
              "accn": "0000798941-23-000039",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-04",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 549000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "end": "2023-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "end": "2023-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "end": "2023-12-31",
              "val": 473000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 473000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 394000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 392000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 455000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 158000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 158000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 158000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 158000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 158000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 345000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 300000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 83000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 232000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 232000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 223000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 4000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -3000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -3000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestModifiedSubsequentDefault": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 21000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 50000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 50000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 84000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 31000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 39000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 62000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 62000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 53000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 78000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 113000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 166000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 174000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ImpairmentOfIntangibleAssetsExcludingGoodwill": {
        "label": "Impairment of Intangible Assets (Excluding Goodwill)",
        "description": "The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 0,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 21000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            }
          ]
        }
      },
      "OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal": {
        "label": "Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)",
        "description": "Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-09-30",
              "val": 79000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2022-07-01",
              "end": "2022-09-30",
              "val": 10000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03",
              "frame": "CY2022Q3"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 94000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 94000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 94000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 246000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 229000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -17000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 212000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 212000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -17000000,
              "accn": "0000798941-23-000048",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-11-03"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -17000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 210000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 210000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 210000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 210000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": -29000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -29000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -35000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -6000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -38000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -38000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -18000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "ProceedsFromLifeInsurancePolicies": {
        "label": "Proceeds from Life Insurance Policy",
        "description": "Amount of cash inflow for proceeds from settlement of corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.",
        "units": {
          "USD": [
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2021-01-01",
              "end": "2021-12-31",
              "val": 0,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14",
              "frame": "CY2021"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 157000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 157000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 157000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 238000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 238000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 1094000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1094000000,
              "accn": "0000798941-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-23"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1094000000,
              "accn": "0000798941-24-000042",
              "fy": null,
              "fp": null,
              "form": "8-K",
              "filed": "2024-08-14"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1094000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1094000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "FinancingReceivableModifiedWeightedAverageInterestRateDecreaseFromModification": {
        "label": null,
        "description": null,
        "units": {
          "pure": [
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0.0131,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0.0349,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0.0351,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0.0221,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0.0149,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0289,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.0289,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0.0152,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0.0152,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0.0086,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0.0086,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0.0069,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0.0069,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0.0107,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 0.0107,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0.0219,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 0.0219,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.01,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.01,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0.0206,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0.0206,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 0.0105,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0.0104,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0.0095,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0.0071,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.0081,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0.0127,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromSecuritiesPurchasedUnderAgreementsToResell": {
        "label": "Proceeds from Securities Purchased under Agreements to Resell",
        "description": "The cash inflow associated with agreements to purchase and then resell securities to counterparties (reverse repurchase agreements).",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-03-31",
              "val": 0,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2023Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 79000000,
              "accn": "0000798941-24-000031",
              "fy": 2024,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2024-05-09",
              "frame": "CY2024Q1"
            }
          ]
        }
      },
      "CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths": {
        "label": "Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months",
        "description": "The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 14000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 7000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 7000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 6000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 7000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 9000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 9000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "InterestExpenseOperating": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 467000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 1353000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 992000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 2473000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 1120000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3679000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 3679000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1267000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2576000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2576000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1309000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 1309000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 3918000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 3918000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1342000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 1342000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 5210000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 5210000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1232000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1232000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 2482000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 1250000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 3746000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 1264000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 4964000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1165000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax": {
        "label": "OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), after Tax",
        "description": "Amount, after tax, of adjustment from accumulated other comprehensive income (loss) for amortization of gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) from transfer to investment in debt security measured at amortized cost (held-to-maturity).",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": -1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": -1000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -1000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent",
        "description": "Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness, attributable to parent.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 2000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 2000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 14000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 14000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 12000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 12000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 8000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 8000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 7000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 7000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 6000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": -1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 5000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": -1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 6000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -14000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax",
        "description": "Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 0,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": -3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": -3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -17000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": -17000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -14000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": -14000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -11000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -11000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -12000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -12000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -12000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -10000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -12000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 19000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ProceedsFromPaymentsForSecuritiesPurchasedUnderAgreementsToResell": {
        "label": "Proceeds from (Payments for) Securities Purchased under Agreements to Resell",
        "description": "The net cash flow from purchases followed by sales of securities under terms of reverse repurchase agreements.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": -298000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -549000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -473000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -473000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 79000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 81000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 81000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 18000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 18000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 315000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 315000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -187000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -187000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -142000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 75000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -74000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 9000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization": {
        "label": "Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization",
        "description": "Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.",
        "units": {
          "USD": [
            {
              "end": "2023-12-31",
              "val": 1877000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "end": "2023-12-31",
              "val": 1877000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "end": "2023-12-31",
              "val": 1877000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-06-30",
              "val": 1938000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 1974000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 2006000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 2006000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 2006000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 2006000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 2006000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 2044000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 2115000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 2283000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 2447000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 2447000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 2499000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "VariableLeaseIncome": {
        "label": "Variable Lease, Income",
        "description": "Amount of variable lease payments from operating, direct financing, and sales-type leases, excluding amount included in measurement of lease receivable.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 51000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-06-30",
              "val": 28000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2023-04-01",
              "end": "2023-06-30",
              "val": 14000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08",
              "frame": "CY2023Q2"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 44000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 15000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 59000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 59000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 16000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 31000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 31000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 15000000,
              "accn": "0000798941-24-000037",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 15000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 46000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 46000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 15000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 61000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 61000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 14000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 14000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 30000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 16000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 44000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 14000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 58000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 14000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DebtSecuritiesRealizedGainLoss": {
        "label": "Debt Securities, Realized Gain (Loss)",
        "description": "Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading).",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": -26000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": -12000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -26000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -26000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DebtSecuritiesTradingRealizedGainLoss": {
        "label": "Debt Securities, Trading, Realized Gain (Loss)",
        "description": "Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading).",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax",
        "description": "Amount, after reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 16000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 11000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax",
        "description": "Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2023-07-01",
              "end": "2023-09-30",
              "val": 0,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07",
              "frame": "CY2023Q3"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-24-000047",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -3000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": -3000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -4000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": -1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -4000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "AccountsPayableOtherCurrentAndNoncurrent": {
        "label": "Accounts Payable, Other",
        "description": "Amount of obligations incurred and payable classified as other.",
        "units": {
          "USD": [
            {
              "end": "2023-12-31",
              "val": 971000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1030000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "AssetsSoldUnderAgreementsToRepurchaseInterestRate": {
        "label": "Assets Sold under Agreements to Repurchase, Interest Rate",
        "description": "Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets.",
        "units": {
          "pure": [
            {
              "end": "2023-12-31",
              "val": 0.0043,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 0.0059,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "end": "2024-12-31",
              "val": 0.0059,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2024-12-31",
              "val": 0.0059,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "end": "2024-12-31",
              "val": 0.0059,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "end": "2024-12-31",
              "val": 0.0059,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 0.0051,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 0.0052,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 0.0047,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 0.0041,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 0.0041,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 0.0033,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear": {
        "label": "Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year",
        "description": "Amount of contribution expected to be received by defined benefit plan from employer in remainder of current fiscal year. Excludes contribution previously paid by employer in current fiscal year.",
        "units": {
          "USD": [
            {
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 40000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 32000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 60000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 96000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 124000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 124000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 25000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 25000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 27000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 49000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 53000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 13000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestRevolvingWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 99000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 24000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 46000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 69000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 101000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 35000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 35000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 68000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 212000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 266000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 53000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 83000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 3000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 7000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 28000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 47000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 47000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 11000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 11000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 14000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 18000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 22000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 10000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 72000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 17000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 32000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 48000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 56000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 56000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 34000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 34000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 80000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 98000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 117000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 9000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 71000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 4000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 9000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 20000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 16000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 34000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 63000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 103000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 31000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 88000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 134000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 194000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 194000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 39000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 39000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 61000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 90000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 103000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 24000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 169000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 20000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 49000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 79000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 113000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 113000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 22000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 22000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 44000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 65000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 115000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 21000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "ImpairmentLessorAssetUnderOperatingLease": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 4000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2024"
            }
          ]
        }
      },
      "Revenues": {
        "label": "Revenues",
        "description": "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).",
        "units": {
          "USD": [
            {
              "start": "2022-01-01",
              "end": "2022-12-31",
              "val": 5082000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21",
              "frame": "CY2022"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 18787000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 18787000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 2444000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 4904000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 2460000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 7350000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 2446000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 9758000000,
              "accn": "0000798941-25-000010",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-21"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 9758000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2298000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 2298000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 4671000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 2373000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 7104000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 2433000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 9541000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 2313000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "DebtSecuritiesTradingRealizedGain": {
        "label": "Debt Securities, Trading, Realized Gain",
        "description": "Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in net income (trading).",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 4000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 6000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 1000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": 0,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 1000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": 0,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": 0,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableExcludingAccruedInterestModifiedPast12Months": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "end": "2023-12-31",
              "val": 599000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-03-31",
              "val": 696000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1I"
            },
            {
              "end": "2024-06-30",
              "val": 663000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 736000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 701000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 750000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "end": "2025-03-31",
              "val": 750000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 837000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 989000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1135000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1116000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax",
        "description": "Amount, before tax and after reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-03-31",
              "val": 0,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09",
              "frame": "CY2024Q1"
            },
            {
              "start": "2024-01-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2024-04-01",
              "end": "2024-06-30",
              "val": 3000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2024Q2"
            },
            {
              "start": "2024-01-01",
              "end": "2024-09-30",
              "val": 19000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2024-07-01",
              "end": "2024-09-30",
              "val": 16000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2024Q3"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 11000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 9000000,
              "accn": "0000798941-25-000024",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-05-09"
            },
            {
              "start": "2025-01-01",
              "end": "2025-03-31",
              "val": 9000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1"
            },
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": 8000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-04-01",
              "end": "2025-06-30",
              "val": -1000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08",
              "frame": "CY2025Q2"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": 6000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-07-01",
              "end": "2025-09-30",
              "val": -2000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07",
              "frame": "CY2025Q3"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 8000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -19000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease": {
        "label": "Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)",
        "description": "Amount of increase (decrease) in allowance for credit loss on financing receivable.",
        "units": {
          "USD": [
            {
              "start": "2025-01-01",
              "end": "2025-06-30",
              "val": -4000000,
              "accn": "0000798941-25-000040",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-08-08"
            },
            {
              "start": "2025-01-01",
              "end": "2025-09-30",
              "val": -24000000,
              "accn": "0000798941-25-000050",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-11-07"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": -110000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            },
            {
              "start": "2026-01-01",
              "end": "2026-03-31",
              "val": -8000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1"
            }
          ]
        }
      },
      "AssetsHeldForSaleNotPartOfDisposalGroup": {
        "label": "Assets Held-for-sale, Not Part of Disposal Group",
        "description": "Amount of assets held-for-sale that are not part of a disposal group.",
        "units": {
          "USD": [
            {
              "end": "2024-12-31",
              "val": 85000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 804000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24"
            },
            {
              "end": "2025-12-31",
              "val": 804000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1122000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther": {
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other nondeductible expenses.",
        "units": {
          "pure": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.001,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationTaxContingencies": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Contingency, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.",
        "units": {
          "pure": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.012,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.006,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationTaxContingenciesOther": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other income tax contingencies.",
        "units": {
          "pure": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -0.001,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.001,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.001,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationTaxCreditsInvestment": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to investment tax credit.",
        "units": {
          "pure": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0.001,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.008,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.015,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "EffectiveIncomeTaxRateReconciliationTaxCreditsOther": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Other, Percent",
        "description": "Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other tax credits.",
        "units": {
          "pure": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0.004,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.009,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic": {
        "label": "Income (Loss) from Continuing Operations before Income Taxes, Domestic",
        "description": "The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 12043000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 3551000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 2926000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign": {
        "label": "Income (Loss) from Continuing Operations before Income Taxes, Foreign",
        "description": "The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 34000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 41000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 45000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxPaidFederalAfterRefundReceived": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 169000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 207000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 231000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxPaidForeignAfterRefundReceived": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 1000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxPaidStateAndLocalAfterRefundReceived": {
        "label": null,
        "description": null,
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 344000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 554000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 81000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxReconciliationNondeductibleExpenseOther": {
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other nondeductible expenses.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 2000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 4000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxReconciliationTaxContingencies": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Contingency, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies. Including, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 0,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 44000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 17000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxReconciliationTaxContingenciesOther": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in other income tax contingencies.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -7000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 3000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxReconciliationTaxCreditsInvestment": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Investment, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to investment tax credit.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 17000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 29000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 44000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "IncomeTaxReconciliationTaxCreditsOther": {
        "label": "Effective Income Tax Rate Reconciliation, Tax Credit, Other, Amount",
        "description": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other tax credits.",
        "units": {
          "USD": [
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": 6000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": 16000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 26000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "Investments": {
        "label": "Investments",
        "description": "Sum of the carrying amounts as of the balance sheet date of all investments.",
        "units": {
          "USD": [
            {
              "end": "2023-12-31",
              "val": 29999000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 44090000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 44319000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-12-31",
              "val": 41564000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 42986000000,
              "accn": "0000798941-26-000024",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-05-08",
              "frame": "CY2026Q1I"
            }
          ]
        }
      },
      "InvestmentTaxCredit": {
        "label": "Investment Tax Credit",
        "description": "The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits.",
        "units": {
          "USD": [
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 190000000,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      },
      "PreferredStockDividendRatePercentage": {
        "label": "Preferred Stock, Dividend Rate, Percentage",
        "description": "The percentage rate used to calculate dividend payments on preferred stock.",
        "units": {
          "pure": [
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 0.07,
              "accn": "0000798941-26-000015",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-24",
              "frame": "CY2025"
            }
          ]
        }
      }
    }
  }
}